adding and operator

[amir-sabbaghi]

No description provided.

[mtdowling]

Sweet! Could you add the and related compliance tests as part of this commit? Unfortunately, this repo is a slight bit behind other JMESPath implementations, so it might require cherry-picking out the tests that are relevant to "&&".

1. Compliance tests: https://github.com/jmespath/jmespath.test/tree/master/tests
2. jmespath.lua tests: https://github.com/jmespath/jmespath.lua/tree/master/spec/compliance

[amir-sabbaghi]

Current tests in master does not pass completely. There are errors in multiselect and functions tests.
And boolean tests does not pass completely because it cannot parse expressions which contain parentheses. I'm working on them. But I will make separate pull requests for these fixes.