feat: add web context and add go net/http web context

ctx/go-http-context/request.go

@@ -0,0 +1,52 @@
+package go_http_context
+
+import (
+	"github.com/weloe/token-go/ctx"
+	"net/http"
+)
+
+var _ ctx.Request = (*HttpRequest)(nil)
+
+type HttpRequest struct {
+	source *http.Request
+}
+
+func NewHttpRequest(r *http.Request) *HttpRequest {
+	return &HttpRequest{r}
+}
+
+func (d *HttpRequest) Source() interface{} {
+	return d.source
+}
+
+func (d *HttpRequest) Header(key string) string {
+	return d.source.Header.Get(key)
+}
+
+func (d *HttpRequest) PostForm(key string) string {
+	return d.source.PostFormValue(key)
+}
+
+func (d *HttpRequest) Query(key string) string {
+	return d.source.URL.Query().Get(key)
+}
+
+func (d *HttpRequest) Path() string {
+	return d.source.URL.Path
+}
+
+func (d *HttpRequest) Url() string {
+	return d.source.URL.String()
+}
+
+func (d *HttpRequest) Method() string {
+	return d.source.Method
+}
+
+func (d *HttpRequest) Cookie(key string) string {
+	cookie, err := d.source.Cookie(key)
+	if err != nil {
+		return ""
+	}
+	return cookie.Value
+}