Add releases instructions and CI workflow (#1)

* Add releases instructions in README

* Add github actions workflow

.github/workflows/ci_maintainers_toolbox.yml

@@ -0,0 +1,41 @@
+name: "[CI] Maintainers' toolbox"
+on:
+  push:
+    branches:
+      - develop
+      - release/*
+      - "*-stable"
+  pull_request:
+    branches-ignore:
+      - "chore/l10n*"
+
+env:
+  CI: "true"
+  SIMPLECOV: "true"
+  RUBY_VERSION: 2.7.5
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    strategy:
+      fail-fast: false
+      matrix:
+        command:
+          - bundle exec rspec
+    name: Lint code
+    runs-on: ubuntu-latest
+    if: "!startsWith(github.head_ref, 'chore/l10n')"
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ env.RUBY_VERSION }}
+          bundler-cache: true
+      - run: ${{ matrix.command }}
+        name: ${{ matrix.command }}

README.md

@@ -23,6 +23,8 @@ There are a couple differences with the rest of the gems of this repository:
 * About the versioning: as it has not decidim nor decidim-core as dependencies, and to keep it easy to work with, we will not have the same versioning as the others gems.
 * About the ruby version: to make it possible to work with older decidim versions, we will support the lowest supported ruby version.
 
+This is the reason why its in a different repository and not in the decidim repository.
+
 The main scripts are `decidim-backporter`, `decidim-backports-checker`, `decidim-changelog-generator` and `decidim-releaser`.
 
 ### decidim-backporter
@@ -47,6 +49,20 @@ After checking out the repo, run `bin/setup` to install dependencies. You can al
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and the created tag, and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
+## Releases
+
+As this gem is meant to be used outside of the main decidim gems, we will not follow the same versioning. We will release a new version of this gem every time we have a new feature or bugfix that we need to use. This also means that we will not follow the same release process.
+
+To release this gem, follow these steps:
+
+. Bump the version number in `lib/decidim/maintainers_toolbox/version.rb` following [Semantic Versioning](https://semver.org/).
+. Update the `CHANGELOG.md` with the new version and the changes.
+. Commit the changes.
+. Create a new tag with the version number.
+. Push the changes and the tag to the repository.
+. Run `rake build` to build the gem.
+. Run `rake release` to publish the gem to [rubygems.org](https://rubygems.org).
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/decidim/decidim.