feat: add various detector.

- add endian and compiler detector, and modify os detector.
- now we use CMake to add detector-used macro, instead of using some C++ features to detect them.
- change Windows environment detection according to the change of os detector.

src/yycc/windows/import_guard_head.hpp

@@ -4,7 +4,7 @@
 
 #include "../macro/os_detector.hpp"
 
-#if YYCC_OS == YYCC_OS_WINDOWS
+#if defined(YYCC_OS_WINDOWS)
 
 // Define 2 macros to disallow Windows generate MIN and MAX macros
 // which cause std::min and std::max can not function as normal.

src/yycc/windows/import_guard_tail.hpp

@@ -4,7 +4,7 @@
 
 #include "../macro/os_detector.hpp"
 
-#if YYCC_OS == YYCC_OS_WINDOWS
+#if defined(YYCC_OS_WINDOWS)
 
 // Windows also will generate following macros
 // which may cause the function sign is different in Windows and other platforms.

src/yycc/windows/unsafe_suppressor.hpp

@@ -4,7 +4,7 @@
 // If we are in Windows,
 // we need add 2 macros to disable Windows shitty warnings and errors of
 // depracted functions and not secure functions.
-#if YYCC_OS == YYCC_OS_WINDOWS
+#if defined(YYCC_OS_WINDOWS)
 
 #if !defined(_CRT_SECURE_NO_WARNINGS)
 #define _CRT_SECURE_NO_WARNINGS