Added makefile

Makefile

@@ -0,0 +1,30 @@
+GIT_LAST_COMMIT := $(shell git describe --tags --always | sed 's/-/+/' | sed 's/^v//')
+
+ifneq ($(DRONE_TAG),)
+	VERSION ?= $(subst v,,$(DRONE_TAG))
+else
+	ifneq ($(DRONE_BRANCH),)
+		VERSION ?= $(subst release/v,,$(DRONE_BRANCH))
+	else
+		VERSION ?= master
+	endif
+endif
+
+.PHONY: test
+test:
+	flutter test
+
+.PHONY: build-all
+build-all: build-release build-debug build-profile
+
+.PHONY: build-release
+build-release:
+	flutter build apk --release --build-name=$(VERSION)
+
+.PHONY: build-debug
+build-debug:
+	flutter build apk --debug --build-name=$(VERSION)
+
+.PHONY: build-profile
+build-profile:
+	flutter build apk --profile --build-name=$(VERSION)