Add boilerplate files

Author: anssiko

CONTRIBUTING.md

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+This repository is being used for work in the W3C Web Machine Learning Community Group,
+governed by the [W3C Community License Agreement (CLA)](https://www.w3.org/community/about/agreements/cla/).
+To make substantive contributions, you must join the CG.
+
+If you are not the sole contributor to a contribution (pull request), please identify all
+contributors in the pull request comment.
+
+To add a contributor (other than yourself, that's automatic), mark them one per line as follows:
+
+```
++@github_username
+```
+
+If you added a contributor by mistake, you can remove them in a comment with:
+
+```
+-@github_username
+```
+
+If you are making a pull request on behalf of someone else but you had no part in designing the
+feature, you can remove yourself with the above syntax.

LICENSE.md

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+All Reports in this Repository are licensed by Contributors
+under the [W3C Software and Document License](https://www.w3.org/copyright/software-license-2023/).

README.md

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+# Web Model Context API 🧪
+
+This is a repository for the [Web Machine Learning Community Group](https://www.w3.org/groups/cg/webmachinelearning/) ([join](https://webmachinelearning.github.io/community/#join)) to continue discussion on the [Web Model Context API proposal](https://github.com/webmachinelearning/proposals/issues/12).
+
+## Scope of Work
+
+This repository hosts discussions ([issues](https://github.com/webmachinelearning/webmodelcontext/issues)) and any [non-normative reports](https://webmachinelearning.github.io/charter/#non-normative-reports) such as use cases, requirements, and explainers.
+
+Work on formal specifications informed by discussions in this repository require a [charter change](https://webmachinelearning.github.io/charter/#charter-change). We expect to advance to this more formal spec authoring phase in the near future.
+
+## Code of Conduct
+
+The Web Machine Learning Community Group operates under the [W3C Code of Conduct](https://www.w3.org/policies/code-of-conduct/).