Add Makefile for building flatpak

flatpak/Makefile

@@ -0,0 +1,31 @@
+ARCH = $(shell flatpak --default-arch)
+
+APP_ID = com.github.unrud.RemoteTouchpad
+APP_NAME = RemoteTouchpad
+
+.PHONY: all
+all: bundle
+
+.PHONY: build
+build:
+	flatpak-builder --arch=$(ARCH) --force-clean $(APP_NAME) $(APP_ID).json
+
+.PHONY: repo
+repo:
+	flatpak-builder --arch=$(ARCH) --force-clean $(APP_NAME) $(APP_ID).json --repo=repo
+
+.PHONY: bundle
+bundle: repo
+	flatpak build-bundle --arch=$(ARCH) repo $(APP_NAME)-$(ARCH).flatpak $(APP_ID)
+
+.PHONY: clean
+clean:
+	rm -rf $(APP_NAME) $(APP_NAME)-*.flatpak repo .flatpak-builder || true
+
+.PHONY: install
+install:
+	flatpak install --user $(APP_NAME)-$(ARCH).flatpak
+
+.PHONY: uninstall
+uninstall:
+	flatpak uninstall --user $(APP_ID)