chore: Use Kotlin for ReVanced API (#169)

This commit converts the entire project to a KTor project written in Kotlin.
Various APIs have been updated, removed, or changed.
A proxy is present to allow migration between the old and this API, which can serve requests to endpoints from the old API.

.github/workflows/release.yml

@@ -0,0 +1,87 @@
+name: Release
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+      - dev
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          # Make sure the release step uses its own credentials:
+          # https://github.com/cycjimmy/semantic-release-action#private-packages
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Cache Gradle
+        uses: burrunan/gradle-cache-action@v1
+
+      - name: Build
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: ./gradlew startShadowScripts clean
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "lts/*"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v6
+        with:
+          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
+          passphrase: ${{ secrets.GPG_PASSPHRASE }}
+          fingerprint: ${{ env.GPG_FINGERPRINT }}
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: amd64, arm64
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Release
+        env:
+          DOCKER_REGISTRY_USER: ${{ github.actor }}
+          DOCKER_REGISTRY_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_ACTOR: ${{ github.actor }}
+          GITHUB_TOKEN: ${{ secrets.REPOSITORY_PUSH_ACCESS }}
+        run: npm exec semantic-release
+
+      - name: Set Portainer stack webhook URL based on branch
+        run: |
+          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
+            PORTAINER_WEBHOOK_URL=${{ secrets.PORTAINER_WEBHOOK_MAIN_URL }}
+          else
+            PORTAINER_WEBHOOK_URL=${{ secrets.PORTAINER_WEBHOOK_DEV_URL }}
+          fi
+          echo "PORTAINER_WEBHOOK_URL=$PORTAINER_WEBHOOK_URL" >> $GITHUB_ENV
+
+      - name: Trigger Portainer stack update
+        uses: newarifrh/portainer-service-webhook@v1
+        with:
+          webhook_url: ${{ env.PORTAINER_WEBHOOK_URL }}
+
+      - name: Purge outdated images
+        uses: actions/delete-package-versions@v5
+        with:
+          package-name: 'revanced-api'
+          package-type: 'container'
+          min-versions-to-keep: 5
+          delete-only-untagged-versions: 'true'
+          token: ${{ secrets.GITHUB_TOKEN }}