Add support of SKIP options for JSON type

[git-hulk]

<column_name> JSON(max_dynamic_paths=N, max_dynamic_types=M, some.path TypeName, SKIP path.to.skip, SKIP REGEXP 'paths_regexp')

Only support SKIP PATH and SKIP REGEXP in this PR, other options will be supported in further PR.

[coveralls]

Pull Request Test Coverage Report for Build 12652509752

Details

• 101 of 135 (74.81%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 60.52%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
parser/parser_table.go	0	1	0.0%
parser/ast_visitor.go	3	5	60.0%
parser/ast.go	46	61	75.41%
parser/parser_column.go	52	68	76.47%

Totals
Change from base Build 12540630182:	0.2%
Covered Lines:	6489
Relevant Lines:	10722

---

💛 - Coveralls