test(gencpp): add full gencpp/base samples and comprehensive test suite

- Copied 58 files from C:\projects\gencpp\base\ to tests/assets/gencpp_samples
- Added test_gencpp_full_suite.py that validates:
  - Skeleton generation for all .hpp files
  - Code outline generation
  - get_definition for key symbols
  - AST masking with aggregation
- All 25 tests pass

tests/assets/gencpp_samples/gen.hpp

@@ -0,0 +1,39 @@
+/*
+	gencpp: An attempt at "simple" staged metaprogramming for c/c++.
+
+	See Readme.md for more information from the project repository.
+
+	Public Address:
+	https://github.com/Ed94/gencpp
+*/
+#pragma once
+
+#include "helpers/push_ignores.inline.hpp"
+#include "components/header_start.hpp"
+
+GEN_NS_BEGIN
+
+#include "components/types.hpp"
+#include "components/gen/ecodetypes.hpp"
+#include "components/gen/eoperator.hpp"
+#include "components/gen/especifier.hpp"
+#include "components/gen/etoktype.hpp"
+#include "components/parser_types.hpp"
+
+#include "components/ast.hpp"
+#include "components/code_types.hpp"
+#include "components/ast_types.hpp"
+
+#include "components/interface.hpp"
+
+#include "components/constants.hpp"
+#include "components/inlines.hpp"
+#include "components/gen/ast_inlines.hpp"
+
+#include "auxiliary/builder.hpp"
+#include "auxiliary/scanner.hpp"
+
+GEN_NS_END
+
+#include "helpers/pop_container_defines.inline.hpp"
+#include "helpers/pop_ignores.inline.hpp"