feat: Support generators in more matchers

[tienvx]

Support generators for these matchers:

• notEmpty
• equality (not sure how useful it is)
• type

This feature is for preparing adding another feature: supporting fromProviderState syntax in matching expression. e.g.

matching(equalTo, fromProviderState('${Auth}', 'AST00004'))

Depends on #677

[coveralls]

Pull Request Test Coverage Report for Build 11319222280

Details

• 15 of 15 (100.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.004%) to 96.375%

---

Totals
Change from base Build 11319211440:	0.004%
Covered Lines:	2446
Relevant Lines:	2538

---

💛 - Coveralls