Add versioning support to build artifacts and log outputs

- Introduced `Version` variable, set during build via `-ldflags`, to embed application version.
- Updated Dockerfile to accept `APP_VERSION` argument for version injection during build.
- Modified `.goreleaser.yml` to pass GitHub release tag as version via `ldflags`.
- Added version logging in the application startup.

.github/workflows/release.yaml

@@ -21,6 +21,8 @@ jobs:
         with:
           go-version: '>=1.24.0'
           cache: true
+      - name: "Set custom GORELEASER_CURRENT_TAG"
+        run: echo "GORELEASER_CURRENT_TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
       - uses: goreleaser/goreleaser-action@v3
         with:
           distribution: goreleaser