[telemetryquerylanguage] add AND, OR, and parens to WHERE clauses

[kentquirk]

Implements more complex expressions for WHERE clauses in the grammar.

Description:
The transform processor currently accepts a WHERE clause with a single condition, but there are times where multiple conditions are needed in order to filter to the correct data.

This updates the grammar to allow AND and OR with proper precedence, as well as grouping with parentheses.

Note that during development, the parser was restructured to become a standalone component usable by multiple processors, so the code was ported from #11880 (where there were many individual commits).

Link to tracking Issue:
Fixes #10195.
Closes #11880 and supercedes it.

Testing:

• The lexer builder was extracted to a separate function
• Tests were added for the lexer to ensure that keywords are not confused with other identifiers
• Failing tests were added for the parser with complex conditions
• New types added to the grammar (Expression, etc) to support more elaborate expressions
• Grammar structured to handle precedence correctly
• Expression evaluation will be extracted to a more general structure
• More lexer tests
• Parser tests to confirm proper operation
• Add tests for boolean expression evaluators

Documentation:

• Grammar extensions documented

[TylerHelmuth]

@kentquirk I am going to take an in-depth look at this today but based on my first pass I wanted to say great job. This is a complicated feature and you've modeled it in an understandable way

[TylerHelmuth]

@kentquirk reviewed in depth. Mostly just nits.

[TylerHelmuth]

/cc @anuraaga

[kentquirk]

@TylerHelmuth I believe I've addressed all the issues. Thanks for the fantastic feedback.

Also, I believe that I understand from slack that @anuraaga is unavailable right now.

[TylerHelmuth]

One more small documentation nit, otherwise looks great.

[MikeGoldsmith]

Looks good 👍🏻

[kentquirk]

I've fixed the nit that the linter was complaining about, and ran the global make gotidy, so hopefully this time it'll pass all the checks.

[kentquirk]

Or not. This time i tried running make -j2 golint GROUP=other locally, and fixed things until it passed.

[kentquirk]

Rebased after go mod conflict resolution.

[EddieEldridge]

Just want to say thanks for doing this! I badly need to use AND and OR in my queries and this will be a great help.

[TylerHelmuth]

@EddieEldridge as a heads up, this was added to the TQL package, which the transform processor doesn't depend on yet, but I have a PR open to change this.

Hopefully the PR is merged before the next release. If it isn't, then it'll be another two weeks before the processor has this functionality.