feat: add support for index selectors

[koladilip]

Description of the change

New syntax supported .a.0.1 as an alternative to .a[0][1]. This is mainly done as source mapping files uses this syntax.

Checklists

Development

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• Changes have been reviewed by at least one other engineer
• Issue from task tracker has a link to this pull request

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	100%	2925/2925
🟢	Branches	100%	772/772
🟢	Functions	100%	231/231
🟢	Lines	100%	2925/2925

Test suite run success

57 tests passing in 1 suite.

Report generated by 🧪jest coverage report action from 4f82d31