feat(frameworks): add Drupal 8/9/10/11 support (#271)

Detects Drupal projects via composer.json drupal/* deps; extracts routes from *.routing.yml (route nodes + references edges to controllers/forms/entity handlers) and Drupal hook implementations from .module/.install/.theme/.inc. Adds yaml/twig as file-level languages and excludes core/contrib by default. Resolves #268.

src/types.ts

@@ -87,6 +87,8 @@ export const LANGUAGES = [
   'scala',
   'lua',
   'luau',
+  'yaml',
+  'twig',
   'unknown',
 ] as const;
 
@@ -522,6 +524,15 @@ export const DEFAULT_CONFIG: CodeGraphConfig = {
     '**/*.cs',
     // PHP
     '**/*.php',
+    // Drupal-specific PHP extensions
+    '**/*.module',
+    '**/*.install',
+    '**/*.theme',
+    '**/*.inc',
+    // Drupal routing YAML
+    '**/*.routing.yml',
+    // Twig templates
+    '**/*.twig',
     // Ruby
     '**/*.rb',
     // Swift
@@ -667,6 +678,11 @@ export const DEFAULT_CONFIG: CodeGraphConfig = {
     '**/storage/framework/**',
     '**/bootstrap/cache/**',
 
+    // Drupal - core and contrib are rarely customised; index only custom code
+    '**/web/core/**',
+    '**/web/modules/contrib/**',
+    '**/web/themes/contrib/**',
+
     // Ruby
     '**/.bundle/**',
     '**/tmp/cache/**',