Add Winget Releaser workflow

.github/dependabot.yml

@@ -15,3 +15,7 @@ updates:
       - "jjw24"
       - "taooceros"
       - "JohnTheGr8"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/winget.yml

@@ -0,0 +1,15 @@
+name: Publish to Winget
+
+on:
+  release:
+    types: [released]
+
+jobs:
+  publish:
+    # Action can only be run on windows
+    runs-on: windows-latest
+    steps:
+      - uses: vedantmgoyal2009/winget-releaser@v1
+        with:
+          identifier: Flow-Launcher.Flow-Launcher
+          token: ${{ secrets.WINGET_TOKEN }}