Merge putDtype and putType; remove duplicated code (#8610)

* Merge putDtype and putType, remove duplicate code

* Remove extra line

* Simplify typeOfTable and typeOfName choice in blr generation

* Add tests for DsqlCompilerScratch::putDType

* Rename putDtype to putType with dsql_fld* overload

* Use better names for TypeClause gen blr functions and make putField private

* Resolve code style issues

* Fix unit tests for putType with dsql_fld

* Use better names for TypeClause blr generation methods

* Renamed putField to  putType

* Postfix after merge

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Co-authored-by: Artyom Abakumov <[email protected]>

Author: Noremos