support bind uri param (#1612)

* support bind uri (1)

* uri binding successful run

* fix vet warning: github.com/gin-gonic/gin/internal.Param composite literal uses unkeyed fields

* fix code style

* update function name

* fix test function signature

* add test for CanSet

* update readme and add test case

* remove internal.Params

* add coverage

* fix warning

context.go

@@ -574,6 +574,15 @@ func (c *Context) ShouldBindYAML(obj interface{}) error {
 	return c.ShouldBindWith(obj, binding.YAML)
 }
 
+// ShouldBindUri binds the passed struct pointer using the specified binding engine.
+func (c *Context) ShouldBindUri(obj interface{}) error {
+	m := make(map[string][]string)
+	for _, v := range c.Params {
+		m[v.Key] = []string{v.Value}
+	}
+	return binding.Uri.BindUri(m, obj)
+}
+
 // ShouldBindWith binds the passed struct pointer using the specified binding engine.
 // See the binding package.
 func (c *Context) ShouldBindWith(obj interface{}, b binding.Binding) error {
@@ -585,9 +594,7 @@ func (c *Context) ShouldBindWith(obj interface{}, b binding.Binding) error {
 //
 // NOTE: This method reads the body before binding. So you should use
 // ShouldBindWith for better performance if you need to call only once.
-func (c *Context) ShouldBindBodyWith(
-	obj interface{}, bb binding.BindingBody,
-) (err error) {
+func (c *Context) ShouldBindBodyWith(obj interface{}, bb binding.BindingBody) (err error) {
 	var body []byte
 	if cb, ok := c.Get(BodyBytesKey); ok {
 		if cbb, ok := cb.([]byte); ok {