[Enhancement] Support aggregate function map_agg.

[Jcnessss]

Why I'm doing:

Map_agg is an aggregate function to generate map value, which is frequently used in Trino. To support migrate from Trino to Starrocks, develop the same function in Starrocks.

Related issue #40894

What I'm doing:

I tried 3 ways to develop this function:

1. Using template: key type as KT, value type as VT, in which case neither the key or value could be complex type.
2. Not using template: Both key and value could be complex type, however, we need to call map_column#remove_duplicated_keys, and there is a triple loop in it, which will highly decrease the performance of map_agg.
3. Using template: key type as KT, in which case the value could be complex type.

I think the 3rd one will be the best one, and the behavior is just like Trino.

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.3
  • 3.2
  • 3.1
  • 3.0
  • 2.5

[stdpain]

It seems other system implement has a max limit for map_agg

[Jcnessss]

I'm not sure. It seems that the map_agg of Trino does not have a limit, all my implement is simulating the one in Trino.

[Jcnessss]

@stdpain Thanks for the review again! I have changed the code according to your review. Could you please help me review again?

[Jcnessss]

@stdpain Thanks for all the reviews!

[Jcnessss]

@stdpain Hi, I'm sorry that I forgot to commit a part of FE codes. Could you please review this again?

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

[Java-Extensions Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[BE Incremental Coverage Report]

❌ fail : 10 / 73 (13.70%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	be/src/exprs/agg/map_agg.h	1	64	01.56%	[35, 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 57, 67, 70, 71, 73, 74, 77, 78, 79, 80, 81, 83, 84, 86, 88, 89, 90, 92, 94, 96, 97, 98, 101, 102, 103, 107, 108, 110, 112, 113, 116, 117, 118, 120, 121, 122, 124, 126, 127, 128, 129, 130, 131, 132, 133, 135, 136, 137, 139, 141]
🔵	be/src/exprs/agg/factory/aggregate_resolver_avg.cpp	9	9	100.00%	[]