ci(release): add workflow for building and releasing FFmpeg static libraries

- Creates new GitHub Actions workflow to build FFmpeg static libraries
- Adds support for multiple platforms (Linux/macOS) and architectures (amd64/arm64)
- Implements automatic release creation with tarballs and checksums
- Updates justfile with helper commands to trigger and monitor releases
- Adds comprehensive implementation plan with 5-phase strategy for library distribution
- Includes robust error handling, cross-compilation support, and checksums validation

Author: flexiondotorg

.github/workflows/release-libs.yml

@@ -0,0 +1,89 @@
+name: Release Static Libraries
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Library version (e.g., 8.0.0.0)'
+        required: true
+  push:
+    tags:
+      - 'lib-*'
+
+jobs:
+  build-and-release:
+    name: Build and release for ${{ matrix.os }} ${{ matrix.arch }}
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      matrix:
+        include:
+          - os: linux
+            arch: amd64
+            runner: ubuntu-24.04
+          - os: linux
+            arch: arm64
+            runner: ubuntu-24.04-arm
+          - os: darwin
+            arch: amd64
+            runner: macos-15-intel
+          - os: darwin
+            arch: arm64
+            runner: macos-latest
+      fail-fast: false
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Show system info
+        run: uname -a
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.24'
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Install cargo-c
+        run: cargo install cargo-c
+
+      - name: Install Linux dependencies
+        if: matrix.os == 'linux'
+        run: sudo apt-get update && sudo apt-get install -y yasm nasm meson gperf python3
+
+      - name: Install macOS dependencies
+        if: matrix.os == 'darwin'
+        run: brew update && brew install yasm autoconf ragel meson nasm automake libtool python3
+
+      - name: Build FFmpeg library
+        run: go run ./internal/builder/
+
+      - name: List built files
+        run: ls -la lib/${{ matrix.os }}_${{ matrix.arch }}/
+
+      - name: Create tarball
+        run: |
+          cd lib
+          tar -czf ../ffmpeg-${{ matrix.os }}-${{ matrix.arch }}.tar.gz ${{ matrix.os }}_${{ matrix.arch }}/libffmpeg.a
+
+      - name: Generate checksum
+        run: |
+          sha256sum ffmpeg-${{ matrix.os }}-${{ matrix.arch }}.tar.gz > ffmpeg-${{ matrix.os }}-${{ matrix.arch }}.tar.gz.sha256
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            ffmpeg-${{ matrix.os }}-${{ matrix.arch }}.tar.gz
+            ffmpeg-${{ matrix.os }}-${{ matrix.arch }}.tar.gz.sha256
+          tag_name: ${{ github.ref_name }}
+          body: |
+            FFmpeg static libraries for ffmpeg-statigo
+
+            Version: ${{ inputs.version || github.ref_name }}
+
+            Platform: ${{ matrix.os }}-${{ matrix.arch }}