Repoint submodules to Codeberg

Author: ISSOtm

.gitmodules

@@ -3,7 +3,7 @@
 	url = https://github.com/gbdev/hardware.inc.git
 [submodule "src/include/rgbds-structs"]
 	path = include/rgbds-structs
-	url = https://github.com/ISSOtm/rgbds-structs.git
+	url = https://codeberg.org/ISSOtm/rgbds-structs
 [submodule "include/debugfile.inc"]
 	path = include/debugfile.inc
-	url = https://github.com/ISSOtm/debugfile.inc
+	url = https://codeberg.org/ISSOtm/debugfile.inc