Sync SDL3 wiki -> header

docs/README-FrontPage.md

@@ -0,0 +1,29 @@
+# All READMEs available here
+
+- [migration](migration)
+- [FrontPage](FrontPage)
+- [versions](versions)
+- [android](android)
+- [psp](psp)
+- [ios](ios)
+- [hg](hg)
+- [touch](touch)
+- [riscos](riscos)
+- [linux](linux)
+- [raspberrypi](raspberrypi)
+- [ps2](ps2)
+- [platforms](platforms)
+- [porting](porting)
+- [dynapi](dynapi)
+- [macos](macos)
+- [emscripten](emscripten)
+- [ngage](ngage)
+- [windows](windows)
+- [winrt](winrt)
+- [n3ds](n3ds)
+- [visualc](visualc)
+- [kmsbsd](kmsbsd)
+- [git](git)
+- [cmake](cmake)
+- [gdk](gdk)
+- [vita](vita)