imdb/tmdb: rename 'create' methods to 'getter' functions

For reasons of plausibility, name does not suggest a "Getter" function

upplement to: - imdb/tmdb: unify some funtions


Origin commit data
------------------
Commit: 6ab8142e6a
Author: Thilo Graf <dbt@novatux.de>
Date: 2021-04-08 (Thu, 08 Apr 2021)

src/gui/mdb-tmdb.cpp

@@ -184,7 +184,7 @@ bool CTMDB::GetMovieDetails(std::string lang, bool second)
 	return false;
 }
 
-std::string CTMDB::CreateEPGText()
+std::string CTMDB::getEPGText()
 {
 	std::string epgtext("");
 
@@ -207,7 +207,7 @@ std::string CTMDB::CreateEPGText()
 	return epgtext;
 }
 
-std::string CTMDB::CreateMovieText()
+std::string CTMDB::getMovieText()
 {
 	std::string movietext("");