Implemented Xhyzi's RHH copyright intro (with config) (#2415)

* Rhh & Pret Copyright Screen

* Porygon recovered his voice

* Expansion text

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Co-authored-by: Xhyzi <xhyzdot@gmail.com>
Co-authored-by: Jaizu <jaizu85@gmail.com>

sym_ewram.txt

@@ -149,3 +149,4 @@
 	.include "src/trainer_hill.o"
 	.include "src/rayquaza_scene.o"
 	.include "src/debug.o"
+	.include "src/rhh_copyright.o"