build: Drop Hydrun config in favor of Flathub-provided action

.github/workflows/flatpak.yaml

@@ -0,0 +1,19 @@
+name: Flatpak CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+    container:
+      image: bilelmoussaoui/flatpak-github-actions:gnome-44
+      options: --privileged
+    steps:
+      - uses: actions/checkout@v3
+      - uses: flatpak/flatpak-github-actions/[email protected]
+        with:
+          bundle: com.pojtinger.felicitas.vintangle.flatpak
+          manifest-path: com.pojtinger.felicitas.vintangle.yaml
+          cache-key: flatpak-builder-${{ github.sha }}

.gitignore

@@ -1,4 +1,3 @@
-out
-*.compiled
 .flatpak-builder
 build-dir
+*.compiled

README.md

@@ -4,7 +4,7 @@
 
 Synchronized torrent streaming for distributed watch parties.
 
-[![hydrun CI](https://github.com/pojntfx/vintangle/actions/workflows/hydrun.yaml/badge.svg)](https://github.com/pojntfx/vintangle/actions/workflows/hydrun.yaml)
+[![Flatpak CI](https://github.com/pojntfx/vintangle/actions/workflows/flatpak.yaml/badge.svg)](https://github.com/pojntfx/vintangle/actions/workflows/flatpak.yaml)
 ![Go Version](https://img.shields.io/badge/go%20version-%3E=1.18-61CFDD.svg)
 [![Go Reference](https://pkg.go.dev/badge/github.com/pojntfx/vintangle.svg)](https://pkg.go.dev/github.com/pojntfx/vintangle)
 [![Matrix](https://img.shields.io/matrix/vintangle:matrix.org)](https://matrix.to/#/#vintangle:matrix.org?via=matrix.org)