fix(git): add vendor in .gitignore

vendor/github.com/spf13/cast/Makefile

@@ -1,40 +0,0 @@
-GOVERSION := $(shell go version | cut -d ' ' -f 3 | cut -d '.' -f 2)
-
-.PHONY: check fmt lint test test-race vet test-cover-html help
-.DEFAULT_GOAL := help
-
-check: test-race fmt vet lint ## Run tests and linters
-
-test: ## Run tests
-	go test ./...
-
-test-race: ## Run tests with race detector
-	go test -race ./...
-
-fmt: ## Run gofmt linter
-ifeq "$(GOVERSION)" "12"
-	@for d in `go list` ; do \
-		if [ "`gofmt -l -s $$GOPATH/src/$$d | tee /dev/stderr`" ]; then \
-			echo "^ improperly formatted go files" && echo && exit 1; \
-		fi \
-	done
-endif
-
-lint: ## Run golint linter
-	@for d in `go list` ; do \
-		if [ "`golint $$d | tee /dev/stderr`" ]; then \
-			echo "^ golint errors!" && echo && exit 1; \
-		fi \
-	done
-
-vet: ## Run go vet linter
-	@if [ "`go vet | tee /dev/stderr`" ]; then \
-		echo "^ go vet errors!" && echo && exit 1; \
-	fi
-
-test-cover-html: ## Generate test coverage report
-	go test -coverprofile=coverage.out -covermode=count
-	go tool cover -func=coverage.out
-
-help:
-	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'