add makefile for ci

Author: Lamby777

Makefile

@@ -0,0 +1,15 @@
+# Ignore this makefile, it only exists for CI purposes. (cross-compilation)
+GRCC_GAME_PKG_NAME=PETS_2037
+GRCC_GAME_PKG_VERSION=0.0.2
+GRCC_GODOT_RUST_LIB_NAME=pets-lib
+GRCC_GAME_REPO_NAME=PETS-G
+
+include grcc.mk
+
+all: grcc-all
+test: grcc-test
+clean: grcc-clean
+native: grcc-native
+cross: grcc-cross
+export: grcc-export
+