[Flatpak] Add release github workflow (#4529)

* Add flatpak release workflow

Co-authored-by: Mary <mary@mary.zone>

* infra: Update required SDK version to 7.0.200

---------

Co-authored-by: Mary <mary@mary.zone>

.github/workflows/release.yml

@@ -25,11 +25,12 @@ jobs:
       RYUJINX_TARGET_RELEASE_CHANNEL_OWNER: "Ryujinx"
       RYUJINX_TARGET_RELEASE_CHANNEL_REPO: "release-channel-master"
 
+
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-dotnet@v3
         with:
-          dotnet-version: 7.0.x
+          global-json-file: global.json
       - name: Get version info
         id: version_info
         run: |
@@ -112,3 +113,9 @@ jobs:
           owner: ${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_OWNER }}
           repo: ${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_REPO }}
           token: ${{ secrets.RELEASE_TOKEN }}
+
+  flatpak_release:
+    uses: ./.github/workflows/flatpak.yml
+    with:
+      ryujinx_version: ${{ env.RYUJINX_BASE_VERSION }}.${{ github.run_number }}
+    secrets: inherit