chore: add make target to build all binaries together (#1211)

Add make build target that builds all troubleshoot binaries in parallel
using -j make flag that lets make run all make sub-targets as separate jobs

Author: banjoh

Makefile

@@ -66,6 +66,11 @@ preflight-e2e-test:
 support-bundle-e2e-test:
 	./test/validate-support-bundle-e2e.sh
 
+# Build all binaries in parallel ( -j )
+build:
+	@echo "Build cli binaries"
+	$(MAKE) -j support-bundle preflight analyze collect
+
 .PHONY: support-bundle
 support-bundle:
 	go build ${BUILDFLAGS} ${LDFLAGS} -o bin/support-bundle github.com/replicatedhq/troubleshoot/cmd/troubleshoot