refactor in preparation for adoption the project

…ot-compliant

Fixed `val()` edge cases: hex without radix and `NaN`

* add logic for optional chaining

* remove console log

* format doc

* fix test

* fix uts

* Preventing multiple calls for dot-chained methods

* Fixed `prettier` issue

…) (#24)

…d `roTimespan` #28 (#29)

* fix(components): Replacing package luxon by day.js on `roDateTime` and `roTimespan` #28

* Fixed prettier issue

…nd `roAssociativeArray` (#33)

* Implements missing methods from `ifEnum` in `roArray` and `roAssociativeArray` #26

* Implemented unit tests

* Prettier fix

---------

Co-authored-by: Bronley Plumb <[email protected]>

* feat(lex): Emit try/catch/throw lexemes for parsing

RBI 9.4 adds support for error handling via the `try`/`catch` model [1].
Interestingly, `try`, `catch`, and `endtry` are all valid identifiers!
That makes parsing a little bit tougher, but it's not unprecedented in
this language.  Detect `try`/`catch`/throw`/`end try` during lexing and
emit the proper lexemes.

[1] https://developer.roku.com/docs/references/brightscript/language/error-handling.html
see sjbarag#554

* feat(parse): Consume try, catch, and end try lexemes

Throwing exceptions and catching them aren't yet supported in `brs`, so
executing only the `try` block seems to be a reasonable "bare minimum"
approach to try/catch support.  Handle `try`, `catch`, and `end try`
lexemes in the parser, emitting TryCatch statements for the interpreter
to execute naïvely.

see sjbarag#554

* Fixed Test Case

---------

Co-authored-by: Sean Barag <[email protected]>
Co-authored-by: Bronley Plumb <[email protected]>