feat(Web): Enhance App Service and Slot properties with new methods and ExtendedLocation class

Author: GeekMasher

ql/lib/codeql/bicep/ast/Literals.qll

@@ -74,6 +74,10 @@ class Boolean extends Literals instanceof BooleanImpl {
       result = false
     )
   }
+
+  boolean getValue() {
+    result = this.getBool()
+  }
 }
 
 /**