Added general files

CONTRIBUTING.md

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+## How to contribute
+
+You are encouraged to contribute to the repository by **forking and submitting a pull request**.
+
+For significant changes, please open an issue first to discuss the proposed changes to avoid re-work.
+
+(If you are new to GitHub, you might start with a [basic tutorial](https://help.github.com/articles/set-up-git) and check out a more detailed guide to [pull requests](https://help.github.com/articles/using-pull-requests/).)
+
+Pull requests will be evaluated by the repository guardians on a schedule and if deemed beneficial will be committed to the master. Pull requests should have a descriptive name and include an summary of all changes made in the pull request description.
+
+If you would like to propose a significant change, please open an issue first to discuss the work with the community.
+
+All contributors retain the original copyright to their stuff, but by contributing to this project, you grant a world-wide, royalty-free, perpetual, irrevocable, non-exclusive, transferable license to all users **under the terms of the license under which this project is distributed.**

LICENSE

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+
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+   END OF TERMS AND CONDITIONS
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+   Copyright 2017 Sovrin Foundation
+   Copyright 2020 Province of British Columbia
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
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+
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+
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+   See the License for the specific language governing permissions and
+   limitations under the License.

MAINTAINERS.md

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+# Maintainers
+
+<!-- Please keep all lists sorted alphabetically by github -->
+
+## Active Maintainers
+
+| Name                | Github             | LFID |
+|---------------------|--------------------|------|
+| Artem Ivanov        | Artemkaaas         |      |
+| Renata Toktar       | Toktar             |      |
+| Alexander Sherbakov | ashcherbakov       |      |
+| Wade Barnes         | WadeBarnes         |      |
+
+## Becoming a Maintainer
+
+Indy-Besu welcomes community contribution.
+Each community member may progress to become a maintainer.
+
+How to become a maintainer:
+
+- Contribute significantly to the code in this repository.
+
+### Maintainers contribution requirement
+
+The requirement to be able to be proposed as a maintainer is:
+
+- 5 significant changes on code have been authored in this repos by the proposed maintainer and accepted (merged PRs).
+
+### Maintainers approval process
+
+The following steps must occur for a contributor to be "upgraded" as a maintainer:
+
+- The proposed maintainer has the sponsorship of at least one other maintainer.
+    - This sponsoring maintainer will create a proposal PR modifying the list of
+      maintainers. (see [proposal PR template](#proposal-pr-template).)
+    - The proposed maintainer accepts the nomination and expresses a willingness
+      to be a long-term (more than 6 month) committer by adding a comment in the proposal PR.
+    - The PR will be communicated in all appropriate communication channels
+      including at least [indy-contributors channel on Hyperledger Discord](https://discord.gg/hyperledger),
+      the [mailing list](https://lists.hyperledger.org/g/indy)
+      and any maintainer/community call.
+- Approval by at least 3 current maintainers within two weeks of the proposal or
+  an absolute majority (half the total + 1) of current maintainers.
+    - Maintainers will vote by approving the proposal PR.
+- No veto raised by another maintainer within the voting timeframe.
+    - All vetoes must be accompanied by a public explanation as a comment in the
+      proposal PR.
+    - A veto can be retracted, in that case the voting timeframe is reset and all approvals are removed.
+    - It is bad form to veto, retract, and veto again.
+
+The proposed maintainer becomes a maintainer either:
+
+- when two weeks have passed without veto since the third approval of the proposal PR,
+- or an absolute majority of maintainers approved the proposal PR.
+
+In either case, no maintainer raised and stood by a veto.
+
+## Removing Maintainers
+
+Being a maintainer is not a status symbol or a title to be maintained indefinitely.
+
+It will occasionally be necessary and appropriate to move a maintainer to emeritus status.
+
+This can occur in the following situations:
+
+- Resignation of a maintainer.
+- Violation of the Code of Conduct warranting removal.
+- Inactivity.
+    - A general measure of inactivity will be no commits or code review comments
+      for two reporting quarters, although this will not be strictly enforced if
+      the maintainer expresses a reasonable intent to continue contributing.
+    - Reasonable exceptions to inactivity will be granted for known long term
+      leave such as parental leave and medical leave.
+- Other unspecified circumstances.
+
+As for adding a maintainer, the record and governance process for moving a
+maintainer to emeritus status is recorded using review approval in the PR making that change.
+
+Returning to active status from emeritus status uses the same steps as adding a
+new maintainer.
+
+Note that the emeritus maintainer always already has the required significant contributions.
+There is no contribution prescription delay.
+
+## Proposal PR template
+
+```markdown
+I propose to add [maintainer github handle] as a Indy-Besu project maintainer.
+
+[maintainer github handle] contributed with many high quality commits:
+
+- [list significant achievements]
+
+Here are [their past contributions on Indy-Besu project](https://github.com/hyperledger/indy-besu/commits?author=[user github handle]).
+
+Voting ends two weeks from today.
+
+For more information on this process see the Becoming a Maintainer section in the MAINTAINERS.md file.
+```