chore: add apple silicon processors build command (#682)

Add build reckoner commands for Apple Silicon chips (macbooks M1 and M2)

Author: Startouf

Makefile

@@ -28,5 +28,7 @@ clean:
 # Cross compilation
 build-linux:
 	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $(GOBUILD) -o $(BINARY_NAME) -ldflags "-X main.version=$(VERSION) -X main.commit=$(COMMIT) -s -w" -v
+build-apple-silicon:
+	CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 $(GOBUILD) -o $(BINARY_NAME) -ldflags "-X main.version=$(VERSION) -X main.commit=$(COMMIT) -s -w" -v
 build-docker: build-linux
 	docker build -t quay.io/fairwinds/reckoner:go-dev -f Dockerfile .