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/dependencies/src_start.cpp

@@ -0,0 +1,85 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "header_start.hpp"
+#endif
+
+#pragma region Macros and Includes
+
+#	include <stdio.h>
+// NOTE: Ensure we use standard methods for these calls if we use GEN_PICO
+#	if ! defined( GEN_PICO_CUSTOM_ROUTINES )
+#		if ! defined( GEN_MODULE_CORE )
+#			define _strlen                   strlen
+#			define _printf_err( fmt, ... )   fprintf( stderr, fmt, __VA_ARGS__ )
+#			define _printf_err_va( fmt, va ) vfprintf( stderr, fmt, va )
+#		else
+#			define _strlen                   c_str_len
+#			define _printf_err( fmt, ... )   c_str_fmt_out_err( fmt, __VA_ARGS__ )
+#			define _printf_err_va( fmt, va ) c_str_fmt_out_err_va( fmt, va )
+#		endif
+#	endif
+#
+#	include <errno.h>
+#
+#	if defined( GEN_SYSTEM_UNIX ) || defined( GEN_SYSTEM_MACOS )
+#		include <unistd.h>
+#	elif defined( GEN_SYSTEM_WINDOWS )
+#		if ! defined( GEN_NO_WINDOWS_H )
+#			ifndef WIN32_LEAN_AND_MEAN
+#				ifndef NOMINMAX
+#					define NOMINMAX
+#				endif
+#
+#				define WIN32_LEAN_AND_MEAN
+#				define WIN32_MEAN_AND_LEAN
+#				define VC_EXTRALEAN
+#			endif
+#			include <windows.h>
+#			undef NOMINMAX
+#			undef WIN32_LEAN_AND_MEAN
+#			undef WIN32_MEAN_AND_LEAN
+#			undef VC_EXTRALEAN
+#		endif
+#	endif
+
+#include <sys/stat.h>
+
+#ifdef GEN_SYSTEM_MACOS
+#	include <copyfile.h>
+#endif
+
+#ifdef GEN_SYSTEM_CYGWIN
+#	include <windows.h>
+#endif
+
+#if defined( GEN_SYSTEM_WINDOWS ) && ! defined( GEN_COMPILER_GCC )
+#	include <io.h>
+#endif
+
+#if defined( GEN_SYSTEM_LINUX )
+#	include <sys/types.h>
+#endif
+
+#ifdef GEN_BENCHMARK
+// Timing includes
+#if defined( GEN_SYSTEM_MACOS ) || GEN_SYSTEM_UNIX
+#	include <time.h>
+#	include <sys/time.h>
+#endif
+
+#if defined( GEN_SYSTEM_MACOS )
+#	include <mach/mach.h>
+#	include <mach/mach_time.h>
+#	include <mach/clock.h>
+#endif
+
+#if defined( GEN_SYSTEM_EMSCRIPTEN )
+#	include <emscripten.h>
+#endif
+
+#if defined( GEN_SYSTEM_WINDOWS )
+#	include <timezoneapi.h>
+#endif
+#endif
+
+#pragma endregion Macros and Includes