switch to dtk setup (#2203)

* switch to dtk setup

* some cleanup / fixes

* cleanup d_a_alink literals

* Restore doxygen, update CI & README.md (#1)

* Fix build image ref (#2)

---------

Co-authored-by: Luke Street <luke@street.dev>

src/m_Do/m_Do_printf.cpp

@@ -21,15 +21,10 @@ u8 __OSReport_System_disable;
 u8 __OSReport_enable;
 
 /* 80006798-800067C8 0010D8 0030+00 1/1 0/0 0/0 .text            OSSwitchFiberEx__FUlUlUlUlUlUl */
-#pragma push
-#pragma optimization_level 0
-#pragma optimizewithasm off
-asm void OSSwitchFiberEx(u32 param_0, u32 param_1, u32 param_2, u32 param_3, u32 param_4,
+void OSSwitchFiberEx(u32 param_0, u32 param_1, u32 param_2, u32 param_3, u32 param_4,
                          u32 param_5) {
-    nofralloc
-#include "asm/m_Do/m_Do_printf/OSSwitchFiberEx__FUlUlUlUlUlUl.s"
+    // NONMATCHING
 }
-#pragma pop
 
 /* 800067C8-800067F4 001108 002C+00 3/3 0/0 0/0 .text            my_PutString__FPCc */
 void my_PutString(const char* string) {
@@ -246,4 +241,4 @@ void OSPanic(const char* file, s32 line, const char* fmt, ...) {
     tmp = (u32*)0x1234567;  // ??????
     *tmp = 0x1234567;
     PPCHalt();
-}
+}