chore: Make qtox CI checks mandatory.

Also only allow rebase merge. Not that it does anything because we can't
automerge anyway, but it signals how we want to merge things (not
necessarily squashing everything into 1 commit if it makes sense to have
multiple).

admin/settings.yaml

@@ -7,9 +7,9 @@ _common:
     default_branch: "master"
     delete_branch_on_merge: true
     is_template: false
-    allow_squash_merge: true
+    allow_squash_merge: false
     allow_merge_commit: false
-    allow_rebase_merge: false
+    allow_rebase_merge: true
     archived: false
     security_and_analysis:
       secret_scanning:
@@ -975,6 +975,24 @@ qTox:
           - "common / buildifier"
           - "common / restyled"
           - "release / update_release_draft"
+          # Custom
+          - "bazel-opt"
+          - "Alpine (full, Debug)"
+          - "Android (arm64-v8a, Release)"
+          - "Check for translatable strings"
+          - "Clang-Tidy"
+          - "Debian (minimal, Debug)"
+          - "Docs"
+          - "Fedora with ASAN (full, Debug)"
+          - "Flatpak"
+          - "Ubuntu LTS (full, Release)"
+          - "Update nightly release tag"
+          - "Windows (i686, Debug)"
+          - "Windows (i686, Release)"
+          - "Windows (x86_64, Debug)"
+          - "Windows (x86_64, Release)"
+          - "macOS distributable"
+          - "macOS user"
 
 spec:
   editRepo: