Update CONTRIBUTING.md and add releasing (#9)

CONTRIBUTING.md

@@ -14,3 +14,14 @@
 - Clone the repo locally `git clone https://github.com/grafana/infinity-libs infinity-libs` and `cd infinity-libs`
 - Install packages `yarn`
 - Run the backend tests with `yarn test`
+
+## Releasing
+
+To create a new version of a package for release, follow these steps:
+
+1. Check out the commit you want to tag by running: `git checkout <COMMIT_SHA>`.
+   - **Note:** Ensure that this commit includes the updated version in the `package.json` of the package you wish to release.   
+2. Tag the commit with: `git tag lib/go/<PACKAGE_NAME>/<VERSION>` (e.g., **lib/go/jsonframer/v1.1.1**).
+   - **Note:** We are using lightweight tags, so no additional options are necessary.
+3. Push the tag to the remote repository with: `git push origin lib/go/<PACKAGE_NAME>/<VERSION>`.
+4. Verify that the tag was created successfully [here](https://github.com/grafana/infinity-libs/tags).