Adding helper and cleaning up such that we are able to regen the matter applications using zap with minimum regen diff using the new data type schema

- adding dataTypeReferenceName to stuct item such that it can be referred to directly through helpers
- minor cleanup in query-bitmap.js
- adding selectNumberById query to query-numbers.js, selectStringByName query to query-string.js
- Joining the data type table with the struct_item table in query-zcl.js such that the data type being referred by a stuct item can also be extracted from the data type table
- Cleaning up helper-endpointconfig.js. Adding a check to detect enum attribute types correctly
- Adding miscellaneous helpers to helper-zap.js which can be used from the zapt templates
- Cleaning up the if_is_* helpers in helper-zcl such that they can now take a data_type_Id from the data_type table or a name of the type. Adding if_is_number/atomic tables as well
- Minor cleanup in types.js. No need to store typeInfo.atomicType. Just use the type and size of type to figure things out
- Minor cleanup in zczl-loader-silabs.js to load strings correctly into the string table in matter and making sure that the struct item field identifiers are calculated correctly as well
- JIRA: ZAPP-757