feat: Implement GitHub Actions Workflows for CI/CD

This commit introduces Actions workflows to automate the Continuous
Integration and Continuous Deployment process. It includes:

- A workflow for running build, vet, and test on branch pushes
- A workflow for building and publishing `nighly`binaries and Docker
  images upon pull requests being merged into the main branch.
- A workflow for building, and uploading new releases.

.gitea/workflows/test-commits.yml

@@ -0,0 +1,20 @@
+name: Test Changes on Push
+
+on:
+  push:
+
+jobs:
+  build-vet-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: '1.21' # Specify your Go version
+    - name: Build
+      run: go build ./...
+    - name: Vet
+      run: go vet ./...
+    - name: Test
+      run: go test ./...