Attempt to fix build, merge build-commands and post-install and address some comments

org.ryujinx.Ryujinx.yml

@@ -1,5 +1,4 @@
 app-id: org.ryujinx.Ryujinx
-name: Ryujinx
 runtime: org.freedesktop.Platform
 runtime-version: '21.08'
 sdk: org.freedesktop.Sdk

ryujinx.yml

@@ -1,12 +1,4 @@
-sources:
-  - nuget_sources.json
-  - type: git
-    url: https://github.com/Ryujinx/Ryujinx.git
-    commit: ac21abbb9d23432879b1026eb5bc48ad3d4583d8
-  - type: file
-    path: ryujinx-wrapper
-  - type: file
-    path: org.ryujinx.Ryujinx.appdata.xml
+name: Ryujinx
 buildsystem: simple
 build-options:
   append-path: /usr/lib/sdk/dotnet6/bin
@@ -37,23 +29,19 @@ build-commands:
     cp -r --remove-destination /run/build/Ryujinx/Ryujinx/bin/Release/net6.0/$RUNTIME/publish/* /app/bin/
     mkdir -p /app/lib/ffmpeg
     ln -s /usr/lib/x86_64-linux-gnu/libX11.so.6 /app/lib/libX11.so
-post-install:
   - install -Dm644 $FLATPAK_ID.appdata.xml /app/share/metainfo/$FLATPAK_ID.appdata.xml
   - install -Dm755 ryujinx-wrapper /app/bin/ryujinx-wrapper
-  - |
-    install -Dm644 distribution/linux/ryujinx-logo.svg /app/share/icons/hicolor/scalable/apps/ryujinx.svg
-    icon_in="distribution/linux/ryujinx-logo.svg";
-    icon_out="ryujinx.png";
-    for s in {16,22,24,32,36,48,64,72,96,128,192,256,512}; do
-      [[ ! -f "/app/share/icons/hicolor/${s}x${s}/apps/${icon_out}" ]] || continue;
-      rsvg-convert "${icon_in}" -w "${s}" -h "${s}" -a -f png -o "${icon_out}";
-      install -p -D -m 0644 "${icon_out}" -t "/app/share/icons/hicolor/${s}x${s}/apps/";
-    done;
-    gtk-update-icon-cache --force --ignore-theme-index /app/share/icons/hicolor
-  - |
-    mkdir -p /app/share/mime/packages/
-    install -m644 distribution/linux/ryujinx-mime.xml /app/share/mime/packages/$FLATPAK_ID.mime.xml
-    update-mime-database /app/share/mime
+  - install -Dm644 distribution/linux/ryujinx-logo.svg /app/share/icons/hicolor/scalable/apps/ryujinx.svg
+  - install -m644 distribution/linux/ryujinx-mime.xml /app/share/mime/packages/$FLATPAK_ID.mime.xml
   - |
     install -Dm644 distribution/linux/ryujinx.desktop /app/share/applications/$FLATPAK_ID.desktop
     desktop-file-edit --set-key="Exec" --set-value="ryujinx-wrapper %f" /app/share/applications/$FLATPAK_ID.desktop
+sources:
+  - nuget_sources.json
+  - type: git
+    url: https://github.com/Ryujinx/Ryujinx.git
+    commit: ac21abbb9d23432879b1026eb5bc48ad3d4583d8
+  - type: file
+    path: ryujinx-wrapper
+  - type: file
+    path: org.ryujinx.Ryujinx.appdata.xml