Basic poster template download and caching (EXPOSUREAPP-5842) (#2709)

* Move CreateTraceLocationApiV1.kt and TraceLocationServer.kt into new sub-package

* Move CreateTraceLocation DI logic into sub-package

* Create infrastructure code for new Qr-Code Poster Template Endpoint

* Add new url to environment

* Show new URL in the Test Menu

* Implement unzipping, signature verification and parsing

* Add possibility to download poster template from TestMenu

* Show Android Vector Drawable in TestMenu

* Create QrCodePosterTemplateApiV1Test.kt

* Remove non-used ProtoConverter from retrofit

* Change button position in Test Fragment

* Show error if something goes wrong

* Improve QrCodePosterTemplateApiV1Test.kt

* Create QrCodePosterTemplateServerTest.kt

* Changed error message

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>
Co-authored-by: Mohamed <mohamed.metwalli@sap.com>