Add Gemini config

Author: zonble

.gemini/config.yaml

@@ -0,0 +1,11 @@
+have_fun: false
+code_review:
+  disable: false
+  comment_severity_threshold: MEDIUM
+  max_review_comments: -1
+  pull_request_opened:
+    help: false
+    summary: true
+    code_review: true
+    include_drafts: true
+ignore_patterns: []