Add release documentation

Signed-off-by: nscuro <nscuro@protonmail.com>

Author: nscuro

.github/images/release-branch.png

@@ -0,0 +1,49 @@
+# Releasing the OWASP Dependency-Track Frontend
+
+This document describes the process of releasing a new version of the Dependency-Track Frontend via GitHub Actions.
+
+## Releasing
+
+### Release a new major of minor version
+
+1. Ensure the current state in `master` is ready to be released
+2. Head over to the *Actions* tab in GitHub
+3. Select the *Release CI* entry in the *Workflows* section
+4. The following UI element will have a button to trigger the workflow. Once clicked, the Use workflow from dialog will appear:
+
+![Create a release from `master`](./.github/images/release-master.png)
+
+5. Ensure that `master` is selected in the branch dropdown
+6. Select the part that should be bumped for this release (see [Semantic Versioning](https://semver.org/))
+7. Finally, once all inputs are checked press the *Run Workflow* button
+8. **Manually** create a release branch by selecting `master` in the branch dropdown and entering the branch name:
+
+![Create a release branch](./.github/images/)
+
+### Release a new bugfix version
+
+> **Warning**
+> This process is currently only semi-automated and involves manual execution of the steps defined in [`ci-release.yaml`](.github/workflows/ci-release.yaml).
+> Besides NPM, the [GitHub CLI](https://cli.github.com/) is required. Ensure the CLI is configured for authenticated use (`gh auth login`).
+
+1. Ensure the current state in the release branch is ready to be released
+2. Clone the repository and checkout the release branch:
+```shell
+git clone https://github.com/DependencyTrack/frontend
+cd frontend
+git checkout 4.6.x
+```
+3. Run `npm version` to automatically bump the project version, commit and tag this change:
+```shell
+npm version patch -m "prepare-release: set version to %s"
+```
+4. Push this change:
+```shell
+git push origin
+```
+5. Create a GitHub release:
+```shell
+VERSION=`jq -r '.version' package.json`
+gh release create "${VERSION}" --title "${VERSION}" --notes-file ".github/default-release-notes.md"
+```
+6. This will kick off the `ci-publish.yaml` workflow, which will build and push the container images, as well as update the previously created release with build artifacts