feat: improve Prometheus compliance

[waynexia]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

• Support Prometheus's expression query result format.
  (Our metadata are dropped during query execution. We can only infer semantic type from the data type.)
• add time index column to group by columns
• filter out NaN in normalize
• remove NULL in instant manipulator
• accept form data as HTTP params
• correct API URL, from v1/range_query to api/v1/query_range
• accept second literal as step param (like 5)

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)

Closes #1020

[codecov]

Codecov Report

Merging #1022 (79128dd) into develop (a8c2b35) will decrease coverage by 0.41%.
The diff coverage is 53.43%.

@@             Coverage Diff             @@
##           develop    #1022      +/-   ##
===========================================
- Coverage    86.23%   85.82%   -0.41%     
===========================================
  Files          436      441       +5     
  Lines        63279    64376    +1097     
===========================================
+ Hits         54568    55251     +683     
- Misses        8711     9125     +414     

Flag	Coverage Δ
rust	85.82% <53.43%> (-0.41%)	⬇️

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

Impacted Files	Coverage Δ
src/servers/src/promql.rs	35.31% <18.58%> (-15.40%)	⬇️
src/promql/src/extension_plan/normalize.rs	92.11% <90.90%> (-0.10%)	⬇️
src/promql/src/planner.rs	86.91% <96.77%> (+0.40%)	⬆️
...rc/promql/src/extension_plan/instant_manipulate.rs	95.94% <100.00%> (-0.40%)	⬇️
src/query/src/parser.rs	97.81% <100.00%> (+0.04%)	⬆️
src/object-store/src/test_util.rs	0.00% <0.00%> (-100.00%)	⬇️
src/storage/src/compaction/scheduler.rs	8.82% <0.00%> (-80.18%)	⬇️
src/storage/src/compaction/picker.rs	23.07% <0.00%> (-19.24%)	⬇️
src/datatypes/src/vectors/operations.rs	81.35% <0.00%> (-18.65%)	⬇️
src/common/substrait/src/df_expr.rs	30.81% <0.00%> (-16.56%)	⬇️
... and 84 more

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[killme2008]

LGTM

[evenyag]

🙏