Split out tools from main go.mod into tools/ (#4734)

* Split out tools from main go.mod into tools/ and create Makefile to support running them manually

* chore(ci): linter error

* fix(ci): fix the pre-commit and pre-push hooks

tools/tools.go

@@ -0,0 +1,25 @@
+//go:build tools
+
+// Package tools manages development tool dependencies.
+// This file is used to track tool dependencies separately from the main module,
+// allowing `go mod vendor` to work without vendoring tool dependencies.
+//
+// Use the Makefile to install and run tools:
+//
+//	make install-tools  # Install all tools to ./bin
+//	make install-hooks  # Install git hooks
+//	make lint           # Run golangci-lint
+//	make fmt            # Format code with gofumpt
+//	make sqlc           # Generate database models
+//	make api-generate   # Generate API code
+//
+// See `make help` for all available targets.
+package tools
+
+import (
+	_ "github.com/evilmartians/lefthook"
+	_ "github.com/golangci/golangci-lint/v2/cmd/golangci-lint"
+	_ "github.com/oapi-codegen/oapi-codegen/v2/cmd/oapi-codegen"
+	_ "github.com/sqlc-dev/sqlc/cmd/sqlc"
+	_ "mvdan.cc/gofumpt"
+)