workflow: Package a Limine tarball that does not rely on version control as well on releases

.github/workflows/main.yml

@@ -93,6 +93,15 @@ jobs:
           git checkout latest-binary
           git rebase $BRANCH_NAME-binary && git push origin latest-binary
 
+      - name: Cleanup source tree
+        run: git checkout $TAG_NAME && rm -rf * && git checkout .
+
+      - name: Burn version number
+        run: echo "$TAG_NAME" > version
+
+      - name: Package release tarball
+        run: cd .. && cp -r limine "limine-$TAG_NAME" && rm -rf "limine-$TAG_NAME/.git" && tar -Jcf "limine/limine-$TAG_NAME.tar.xz" "limine-$TAG_NAME"
+
       - name: Create release notes
         run: echo "Binary release can be found at https://github.com/limine-bootloader/limine/tree/$TAG_NAME-binary" > rel_notes.txt
 
@@ -100,5 +109,7 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           body_path: rel_notes.txt
+          files: |
+            limine-*.tar.xz
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}