perf(perser-adaper-json): fold syntactic analysis phases #407
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Code of the parser have been consolidate into idiomatic
parsing phases: lexical and syntactic analysis.
There are two types of syntactic analysis: direct and indirect.
Indirect syntactic analysis is refactored and simplified original code
which turncs CST into JSON AST and then into ApiDOM.
Direct one is a new one which turns CST directly into ApiDOM.
Switching syntactic analysis is possible via configuration option.
Performance of direct syntactic analysis has been increased by
300% comparsing to original code.
Performance of indirect syntactic analysis has been increased by
10% comparing to original code and has been significantly simplified.
Closes #406