feat: Add Pascal/Delphi language support with DFM/FMX extraction

Implements tree-sitter-based extraction for Pascal/Delphi source files
(.pas, .dpr, .dpk, .lpr) and a custom regex-based DfmExtractor for
form files (.dfm, .fmx). Covers classes, records, interfaces, methods,
properties, fields, enums, constants, type aliases, uses-imports,
visibility sections, inheritance, call extraction, and DFM component
hierarchies with event handler references.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -38,7 +38,8 @@
     "commander": "^14.0.2",
     "figlet": "^1.8.0",
     "picomatch": "^4.0.3",
-    "tree-sitter": "0.22.4"
+    "tree-sitter": "0.22.4",
+    "tree-sitter-pascal": "github:Isopod/tree-sitter-pascal"
   },
   "devDependencies": {
     "@types/better-sqlite3": "^7.6.0",