feat: Initial implementation

- Generated codes, types and resources
- Generated builders

.gitignore

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+/target

.vscode/settings.json

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+{
+	"rust-analyzer.cargo.features": "all"
+}

Cargo.toml

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+[workspace]
+members = ["crates/*"]

LICENSE.md

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+MIT License
+
+Copyright (c) 2022 FlixCoder
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# FHIR SDK
+
+[![crates.io page](https://img.shields.io/crates/v/fhir-sdk.svg)](https://crates.io/crates/fhir-sdk)
+[![docs.rs page](https://docs.rs/fhir-sdk/badge.svg)](https://docs.rs/fhir-sdk/)
+![license: MIT](https://img.shields.io/crates/l/fhir-sdk.svg)
+
+This is a [FHIR](https://www.hl7.org/fhir/) library in its early stages. The models are generated from the FHIR StructureDefinitions (see <https://www.hl7.org/fhir/downloads.html>). It aims to be:
+
+- fully compliant
+- as safe as possibe
+- as easy to use as possible
+- fully featured
+
+## Features
+
+- [x] Generation of FHIR codes, types and resources
+- [x] Serialization and deserialization to and from JSON
+- [x] Linked code-fields to respective enums
+- [x] Builders for types and resources
+- [ ] Allow to convert code enums to Coding and CodeableConcept
+- [ ] Implementation of base traits
+  - [ ] Resource, including FHIR version, resource type (const)
+  - [ ] DomainResource
+  - [ ] IdentifiableResource
+- [ ] FHIR client implmentation
+- [ ] FHIRpath implementation
+- [ ] Resource validation using FHIRpath
+- [ ] Search parameters
+- [ ] XML
+
+## Known Problems
+
+- Due to the big number of big types, the auto-generated builders take a long time during the build time.
+- The builder cannot use `setter(strip_option)`, because it disables dynamic setting of optional fields.
+- `Vec<Option<T>>` is annoying, but sadly is required to allow `[null, {...}, null]` for extensions..
+
+## Lints
+
+This projects uses a bunch of clippy lints for higher code quality and style.
+
+Install [`cargo-lints`](https://github.com/soramitsu/iroha2-cargo_lints) using `cargo install --git https://github.com/FlixCoder/cargo-lints`. The lints are defined in `lints.toml` and can be checked by running `cargo lints clippy --all-targets --workspace`.
+
+## License
+
+Licensed under the MIT license. All contributors agree to license under this license.