Prometheus: Introduce prometheus backend library (#83952)

* Move files to prometheus-library

* refactor core prometheus to use prometheus-library

* modify client transport options

* mock

* have a type

* import aliases

* rename

* call the right method

* remove unrelated test from the library

* update codeowners

* go work sync

* update go.work.sum

* make swagger-clean && make openapi3-gen

* add promlib to makefile

* remove clilogger

* Export the function

* update unit test

* add prometheus_test.go

* fix mock type

* use mapUtil from grafana-plugin-sdk-go

pkg/promlib/converter/testdata/prom-error-frame.jsonc

@@ -0,0 +1,5 @@
+//  
+//  ERROR: bad_data: invalid parameter "start": cannot parse "" to a valid timestamp🌟 This was machine generated.  Do not edit. 🌟
+{
+  "error": "bad_data: invalid parameter \"start\": cannot parse \"\" to a valid timestamp"
+}