feat(ast): Update AST Expr and Resources

Author: GeekMasher

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

@@ -63,7 +63,7 @@ class MemberExpression extends Expr instanceof MemberExpressionImpl {
     /**
      * The namespace of the member expression.
      */
-    Expr getNamespace() { result = MemberExpressionImpl.super.getObject() }
+    Idents getNamespace() { result = MemberExpressionImpl.super.getObject() }
 
     /**
      * The member of the member expression.

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

@@ -87,6 +87,10 @@ class Resource extends TResource {
     exists(StringLiteral sl | sl = resource.getName() | result = sl.getValue())
   }
 
+  Identifier getIdentifier() {
+    result = resource.getIdentifier()
+  }
+
   string getName() {
     exists(StringLiteral name |
       name = resource.getProperty("name") and