Gradually remove Macaron web framework (#36325)

* add macaron code to the code base

* remove unused secure cookies support from macaron

* clean up modules

* remove com dependency

* fix silly typos

* little cleanup, remove recovery middleware

* remove logger middleware

* remove static handler and remove unused context methods

* bring inject into macaron codebase

* remove unused applicator

* add back macaron license

* more cleanups in macaron code

* remove unused injector Set method

* remove unused context methods: param to int conversion, body helper type, cookie helpers

* remove action from context

* remove complex environment handling, we only use Env variable

* restore ReplaceAllParams to fix the tests

pkg/services/live/pushhttp/push.go

@@ -3,6 +3,7 @@ package pushhttp
 import (
 	"context"
 	"errors"
+	"io"
 	"net/http"
 
 	"github.com/grafana/grafana/pkg/infra/log"
@@ -58,7 +59,7 @@ func (g *Gateway) Handle(ctx *models.ReqContext) {
 	urlValues := ctx.Req.URL.Query()
 	frameFormat := pushurl.FrameFormatFromValues(urlValues)
 
-	body, err := ctx.Req.Body().Bytes()
+	body, err := io.ReadAll(ctx.Req.Request.Body)
 	if err != nil {
 		logger.Error("Error reading body", "error", err)
 		ctx.Resp.WriteHeader(http.StatusInternalServerError)