feat: add full support for sync api.

[Zxilly]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 1109906351

• 152 of 266 (57.14%) changed or added relevant lines in 12 files are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-3.4%) to 73.191%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/model/model.ts	3	4	75.0%
src/coreEnforcer.ts	7	10	70.0%
src/rbac/defaultSyncedRoleManager.ts	2	11	18.18%
src/rbac/internalRoleManager.ts	108	122	88.52%
src/util/builtinOperators.ts	9	26	34.62%
src/syncedEnforcer.ts	5	75	6.67%

Files with Coverage Reduction	New Missed Lines	%
src/internalEnforcer.ts	1	57.87%
src/enforcer.ts	4	91.86%

Totals
Change from base Build 1107690622:	-3.4%
Covered Lines:	1211
Relevant Lines:	1589

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💛 - Coveralls

[hsluoyz]

@Zxilly don't append "Revert: xxx" commit, just override the git history:

[Zxilly]

It's impossilbe to make async function works like sync.