common: Miscellaneous cleanups (#7239)

* code: Remove some old msvc workarounds

* android: Upgrade to NDK 26

* Allows access to newer libc++

* common/swap: Make use of std::endian

Allows removing a bunch of defines in favor of a two liner.

* common: Remove misc.cpp

* GetLastErrorMsg has been in error.h for a while and also helps removing a depedency from a hot header like common_funcs

* common: use SetThreadDescription API for thread names

* common: Remove linear disk cache

* Has never been used?

* bit_set: Make constexpr

* ring_buffer: Use feature macro

* bit_set: Use <bit> and concepts

* gsp_gpu: Restore comment

* core: Ignore GCC warning

---------

Co-authored-by: Lioncash <mathew1800@gmail.com>
Co-authored-by: Liam <byteslice@airmail.cc>

src/android/app/build.gradle.kts

@@ -29,7 +29,7 @@ android {
     namespace = "org.citra.citra_emu"
 
     compileSdkVersion = "android-34"
-    ndkVersion = "25.2.9519653"
+    ndkVersion = "26.1.10909125"
 
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17