iox-#2 Add git hooks

[elBoberido]

Pre-Review Checklist for the PR Author

1. Code follows the Rust coding style and is formatted with rustfmt
2. Branch follows the naming format (iox-123-this-is-a-branch)
3. Commits messages are according to this guideline
   • Commit messages have the issue ID (iox-#42 commit text)
   • Commit author matches Eclipse Contributor Agreement (and ECA is signed)
4. Update the PR title
   • Follow the same conventions as for commit messages
   • Link to the relevant issue
5. Relevant issues are linked
6. Add sensible notes for the reviewer
7. All checks have passed (except task-list-completed)
8. Assign PR to reviewer

Notes for Reviewer

This PR adds some basic git-hooks

• add issue number to the commit message
• check for trailing whitespaces
• check for style violations with cargo fmt

Checklist for the PR Reviewer

• Commits are properly organized and messages are according to the guideline
• Code according to our coding style and naming conventions
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

• Closes Add git-hooks #2

[elfenpiff]

Me like colors

[elfenpiff]

What does this little thing do?

[elBoberido]

The location. In my case European Union. It's us if you want to use the script from the United States ;)

• e Exit immediately if a command exits with a non-zero status
• u Treat unset variables as an error when substituting

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.83%. Comparing base (2559c28) to head (d2af8e5).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #72   +/-   ##
=======================================
  Coverage   49.83%   49.83%           
=======================================
  Files          20       20           
  Lines        1202     1202           
=======================================
  Hits          599      599           
  Misses        603      603           

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