Ruby: extract rbi files

ruby/autobuilder/src/main.rs

@@ -16,6 +16,7 @@ fn main() -> std::io::Result<()> {
     cmd.arg("database")
         .arg("index-files")
         .arg("--include-extension=.rb")
+        .arg("--include-extension=.rbi")
         .arg("--include-extension=.erb")
         .arg("--include-extension=.gemspec")
         .arg("--include=**/Gemfile")

ruby/codeql-extractor.yml

@@ -8,6 +8,7 @@ file_types:
     display_name: Ruby files
     extensions:
        - .rb
+       - .rbi
   - name: erb
     display_name: Ruby templates
     extensions: