feat(query): support variant is_<type> functions

[b41sh]

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Summary

support variant is_<type> functions to check variant value type

• is_null_value
• is_boolean
• is_integer
• is_float
• is_string
• is_array
• is_object

• Fixes #[Link the issue here]

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[wubx]

cc @soyeric128