[feature] migrate to monorepo

.forgejo/workflows/build.yml

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+name: Build Backend
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build Docker Image
+    runs-on: docker
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Configure Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          driver: remote
+          endpoint: tcp://${{ secrets.AMD64_BUILDER_HOST }}:${{ secrets.AMD64_BUILDER_PORT }}
+          platforms: linux/amd64
+          name: ${{ secrets.AMD64_BUILDER_NAME }}
+          driver-opts: |
+            servername=${{ secrets.AMD64_BUILDER_NAME }}
+          append: |
+            - endpoint: tcp://${{ secrets.ARM64_BUILDER_HOST }}:${{ secrets.ARM64_BUILDER_PORT }}
+              platforms: linux/arm64
+              name: ${{ secrets.ARM64_BUILDER_NAME }}
+              driver-opts:
+                - "servername=${{ secrets.ARM64_BUILDER_NAME }}"
+        env:
+          BUILDER_NODE_0_AUTH_TLS_CACERT: ${{ secrets.AMD64_BUILDER_CACERT }}
+          BUILDER_NODE_0_AUTH_TLS_CERT: ${{ secrets.AMD64_BUILDER_CERT }}
+          BUILDER_NODE_0_AUTH_TLS_KEY: ${{ secrets.AMD64_BUILDER_KEY }}
+          BUILDER_NODE_1_AUTH_TLS_CACERT: ${{ secrets.ARM64_BUILDER_CACERT }}
+          BUILDER_NODE_1_AUTH_TLS_CERT: ${{ secrets.ARM64_BUILDER_CERT }}
+          BUILDER_NODE_1_AUTH_TLS_KEY: ${{ secrets.ARM64_BUILDER_KEY }}
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.owu.one
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+      - name: Build and Push
+        uses: docker/build-push-action@v6
+        with:
+          context: backend
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: git.owu.one/${{ github.repository_owner }}/tss-rocks-be:latest

.forgejo/workflows/test.yml

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+name: Test Backend
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: [docker, amd64]
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 'stable'
+
+    - name: Set up dependencies
+      run: go mod download
+
+    - name: Install mockgen
+      run: go install go.uber.org/mock/mockgen@latest
+
+    - name: Generate mocks
+      run: go generate ./...
+      working-directory: backend
+
+    - name: Run tests
+      run: go test -v ./...
+      working-directory: backend