Support goctl env install (#1752)

Co-authored-by: anqiansong <anqiansong@bytedance.com>

tools/goctl/env/install.go

@@ -0,0 +1,9 @@
+package env
+
+import "github.com/urfave/cli"
+
+func Install(c *cli.Context) error {
+	force := c.Bool("force")
+	verbose := c.Bool("verbose")
+	return Prepare(true, force, verbose)
+}