Added flatpak manifest and .destkop

Currently the zip archive url in the manifest is temporary for
demonstration purposes.

.gitignore

@@ -32,3 +32,12 @@ yarn-error.log*
 
 # vercel
 .vercel
+
+#flatpak
+.flatpak/
+.flatpak-builder
+repo/
+build-dir/
+
+#vscode
+.vscode/

flatpak/com.github.upscayl.upscayl.json

@@ -0,0 +1,72 @@
+{
+  "app-id": "com.github.upscayl.upscayl",
+  "runtime": "org.freedesktop.Platform",
+  "runtime-version": "22.08",
+  "sdk": "org.freedesktop.Sdk",
+  "base": "org.electronjs.Electron2.BaseApp",
+  "base-version": "22.08",
+  "command": "upscayl-wrapper",
+  "separate-locales": false,
+  "finish-args": [
+    "--share=ipc",
+    "--socket=x11",
+    "--device=dri",
+    "--filesystem=home"
+  ],
+  "modules": [
+    {
+      "name": "zypak",
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://github.com/refi64/zypak",
+          "tag": "v2022.04"
+        }
+      ]
+    },
+    {
+      "name": "upscayl",
+      "buildsystem": "simple",
+      "cleanup": [
+        "upscayl-1.5.5.zip"
+      ],
+      "sources": [
+        {
+          "type": "file",
+          "only-arches": [
+            "x86_64"
+          ],
+          "url": "https://github.com/JanDeDinoMan/upscayl/releases/download/v1.5.5/upscayl-1.5.5.zip",
+          "sha256": "0e57b3cbb96299fac6beea185ffdf2f105d3258ac6081bd1f3c408912541dacc"
+        },
+        {
+          "type": "file",
+          "path": "com.github.upscayl.upscayl.metainfo.xml"
+        },
+        {
+          "type": "file",
+          "path": "../main/build/icon.png"
+        },
+        {
+          "type": "script",
+          "dest-filename": "upscayl-wrapper",
+          "commands": [
+            "zypak-wrapper /app/upscayl/upscayl"
+          ]
+        }
+      ],
+      "build-commands": [
+        "install -d /app/upscayl",
+        "unzip upscayl-1.5.5 -d /app/upscayl",
+        "install upscayl-wrapper /app/bin/",
+        "install -d /app/share/icons/hicolor/512x512/apps/",
+        "install icon.png /app/share/icons/hicolor/512x512/apps/com.github.upscayl.upscayl.png",
+        "install -d /app/share/applications",
+        "touch com.github.upscayl.upscayl.desktop",
+        "install -Dp -m644 com.github.upscayl.upscayl.metainfo.xml /app/share/metainfo/com.github.upscayl.upscayl.metainfo.xml",
+        "install -m644 com.github.upscayl.upscayl.desktop /app/share/applications/com.github.upscayl.upscayl.desktop",
+        "desktop-file-edit --set-key=Exec --set-value='upscayl-wrapper %U' --set-key=Icon --set-value='com.github.upscayl.upscayl' --set-key=Comment --set-value='Upscale Images' --set-key=Name --set-value='Upscayl' --set-key=StartupNotify --set-value='false' --set-key=Categories --set-value='ImageProcessing;RasterGraphics;Graphics;' --set-key=Type --set-value='Application' /app/share/applications/com.github.upscayl.upscayl.desktop"
+      ]
+    }
+  ]
+}

flatpak/com.github.upscayl.upscayl.metainfo.xml

@@ -0,0 +1,25 @@
+<?xml version='1.0' encoding='utf-8'?>
+<component type="desktop">
+    <id>com.github.upscayl.upscayl</id>
+    <name>Upscayl</name>
+    <summary>Free and Open Source AI Image Upscaler</summary>
+    <developer_name>Nayam Amarshe</developer_name>
+    <launchable type="desktop-id">com.github.upscayl.upscayl.desktop</launchable>
+    <metadata_license>FSFAP</metadata_license>
+    <project_license>AGPL-3.0</project_license>
+    <description>
+        <p>Free and Open Source AI Image Upscaler</p>
+    </description>
+    <url type="homepage">https://github.com/upscayl/upscayl/</url>
+    <url type="bugtracker">https://github.com/upscayl/upscayl/issues</url>
+    <categories>
+        <category>Graphics</category>
+        <category>RasterGraphics</category>
+        <category>ImageProcessing</category>
+    </categories>
+    <content_rating type="oars-1.1" />
+    <keywords>
+        <keyword>upscale</keyword>
+    </keywords>
+    <translation type="gettext">Upscayl</translation>
+</component>