feat: Support unary, paren, bool keyword and nonexistent metric/label in PromQL

[waynexia]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

• Support bool keyword (some_metric > bool 1)
• Support unary expr (-some_metric)
• Support paren expr ((some_metric))
• Do not report error when querying a nonexistent label/metric.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

Part of #1042

[codecov]

Codecov Report

Merging #1049 (8d5d12f) into develop (9161796) will decrease coverage by 0.11%.
The diff coverage is 79.24%.

@@             Coverage Diff             @@
##           develop    #1049      +/-   ##
===========================================
- Coverage    85.81%   85.71%   -0.11%     
===========================================
  Files          444      446       +2     
  Lines        64568    64897     +329     
===========================================
+ Hits         55411    55628     +217     
- Misses        9157     9269     +112     

Flag	Coverage Δ
rust	85.71% <79.24%> (-0.11%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/servers/src/promql.rs	40.40% <72.72%> (+5.08%)	⬆️
src/promql/src/planner.rs	88.27% <80.00%> (+1.35%)	⬆️
src/object-store/src/test_util.rs	0.00% <0.00%> (-100.00%)	⬇️
src/datanode/src/instance.rs	43.77% <0.00%> (-14.34%)	⬇️
tests-integration/src/test_util.rs	79.08% <0.00%> (-9.51%)	⬇️
src/frontend/src/table/scan.rs	85.18% <0.00%> (-5.56%)	⬇️
src/servers/src/opentsdb.rs	96.82% <0.00%> (-1.59%)	⬇️
src/servers/src/opentsdb/handler.rs	93.81% <0.00%> (-1.04%)	⬇️
src/mito/src/engine.rs	98.11% <0.00%> (-0.28%)	⬇️
src/table/src/engine.rs	96.55% <0.00%> (ø)
... and 13 more

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[evenyag]

LGTM

[killme2008]

LGTM