format with gofumpt (#18184)

* gofumpt -w -l .

* gofumpt -w -l -extra .

* Add linter

* manual fix

* change make fmt

Makefile

@@ -231,8 +231,10 @@ clean:
 
 .PHONY: fmt
 fmt:
-	@echo "Running gitea-fmt(with gofmt)..."
-	@$(GO) run build/code-batch-process.go gitea-fmt -s -w '{file-list}'
+	@hash xgogofumpt > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
+		$(GO) install mvdan.cc/gofumpt@latest; \
+	fi
+	gofumpt -w -l -extra -lang 1.16 .
 
 .PHONY: vet
 vet: