Migrated codebase to work as an action (#48)

Updated codebase to run as an action instead of a application.

This PR mainly removes most of the boilerplate and code unrelated to the action itself and adapts everything to work in a more organized and abstract way.

It splits the architecture into an object oriented dependency injection system, having the class `Synchronizer` handling all the business logic and the classes `ProjectKit`,`IssueKit` and `CoreLogger` handling specific subtasks.

To be able to fine-grain the project permissions and keep the highest level of security possible while maintaining a sane codebase, the action of each token has been split into its own class:
- ProjectKit uses a PAT with organization access as it needs to interact with the project API (which is part of an organization instead of a repository).
- IssueKit uses the autogenerated GitHub token to fetch information from the issues API available in the repository.

`ProjectKit` is still in development, as it's missing the ability to update custom fields (#44) and it's using a deprecated API (#46) so it's prone to changes in the following PRs.

This PR is aimed at a feature branch and not at the master branch. The reason for this is because this task does not contemplate all the necessary features to launch this action. This is the first task of many which can be found in the milestone: [GitHub Action port](https://github.com/paritytech/github-issue-sync/milestone/1). Once all this tasks have been completed, the feature branch will be merged into master replacing the current functionality.

This PR also removes the ability to use custom labeling and custom fields. This will be added later to the feature branch.

The action was ported to work as a Docker image instead of a JavaScript image. This is because the docker image allows to build the action on demand (currently ~45 seconds). A more efficient method will be proposed later but for the current development process this satisfies the requirements.

This PR resolves #43.

Author: Bullrich

.dockerignore

@@ -1,4 +1,2 @@
 node_modules
-build/*
-!build/package.json
 dist

.eslintrc.cjs

@@ -6,8 +6,6 @@ updates:
     schedule:
       interval: "daily"
     ignore:
-      # @types/node should be bumped manually once we change the Node.js version used
-      - dependency-name: "@types/node"
       - dependency-name: "*"
         # Ignore version upgrades.
         # Security updates are nevertheless. unaffected by this setting and will continue to work.

.github/dependabot.yml

@@ -0,0 +1,19 @@
+name: Continuous testing
+
+on: [pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use node 18
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+      - name: Install dependencies
+        run: yarn install --immutable
+      - name: Run tests
+        run: yarn test
+      - name: Build the project
+        run: yarn build

.github/workflows/javascript-test.yml

@@ -1,9 +1,8 @@
 # deps
-node_modules
+/node_modules
 
 # TypeScript compilation directory
-build/*
-!build/package.json
+/dist
 
 # ncc output directory used for the action release
 # normally the package would be ignored, but in this case it shouldn't because
@@ -14,3 +13,4 @@ build/*
 yarn-error.log
 
 .idea
+.DS_Store

.gitignore

@@ -0,0 +1,11 @@
+FROM node:18
+
+COPY package.json yarn.lock ./
+
+RUN yarn install --frozen-lockfile
+
+COPY . .
+
+RUN yarn build
+
+CMD ["yarn", "start"]