Flag: demo program rewritten from C to FASM (#219)

Original source: http://ftp.kolibrios.org/arch/libraries/TinyGL/examples/flag_src.7z

Reviewed-on: #219
Reviewed-by: Max Logaev <maxlogaev@proton.me>
Reviewed-by: Ivan B <dunkaist@noreply.localhost>
Co-authored-by: IgorA <aie85playm@gmail.com>
Co-committed-by: IgorA <aie85playm@gmail.com>

programs/develop/libraries/TinyGL/asm_fork/kosgl.inc

@@ -0,0 +1,9 @@
+struct TinyGLContext
+	gl_context dd ?
+	xsize dd ? ;+4
+	ysize dd ? ;+8
+	d_x   dd ? ;+12
+	d_y   dd ? ;+16
+	x     dd ? ;+20
+	y     dd ? ;+24
+ends