added default flathub remote

elements/collections/core.bst

@@ -10,14 +10,15 @@ depends:
   - components/android-udev-rules.bst
   - components/sudoer.bst
   - components/ostree-remote.bst
+  - components/flathub-config.bst
   - components/distrobox.bst
   - components/fprintd.bst
   - components/thermald.bst
   - components/nss-mdns.bst
   - components/os-release.bst
   - components/systemd-presets.bst
   - components/ntfs-3g.bst
-  # - components/zram-generator.bst
+  - components/zram-generator.bst
   - components/alsa-ucm.bst
   - freedesktop-sdk.bst:bootstrap-import.bst
   - freedesktop-sdk.bst:components/bash-config.bst

elements/components/flathub-config.bst

@@ -0,0 +1,9 @@
+kind: import
+
+config:
+  target: /etc/flatpak/remotes.d/
+
+sources:
+  - kind: remote
+    url: https://flathub.org/repo/flathub.flatpakrepo
+    ref: 3371dd250e61d9e1633630073fefda153cd4426f72f4afa0c3373ae2e8fea03a