chore: add support for a makefile (#4852)

Author: remyleone

.gitignore

@@ -9,3 +9,5 @@ scw-cli-v2-version
 
 # To avoid having differences in case you use a different shell than bash while recording the goldens
 docs/commands/autocomplete.md
+
+scw

Makefile

@@ -0,0 +1,11 @@
+build:
+	./scripts/build.sh
+
+lint:
+	./scripts/lint.sh
+
+test:
+	./scripts/test.sh
+
+fmt:
+	golangci-lint run --fix ./...