[Enhancement] Support push down avg aggregate function in mv rewrite

[LiShuMing]

Why I'm doing:

• If we have defined sum/count aggregate function for a table, we can also support avg function to push down below join since avg can be rewritten by sum/count.

But this case cannot work yet.

        String mv = String.format("CREATE MATERIALIZED VIEW mv0 REFRESH MANUAL as " +
                "select LO_ORDERDATE, sum(LO_REVENUE) as revenue_sum, count(LO_REVENUE) as revenue_cnt,\n" +
                " sum(lo_custkey) as sum_lo_custkey, count(lo_custkey) as count_lo_custkey\n" +
                "from lineorder l group by LO_ORDERDATE");
        starRocksAssert.withMaterializedView(mv, () -> {
            String query = String.format("select LO_ORDERDATE, sum(LO_REVENUE), avg(LO_REVENUE) as avg1, " +
                    "avg(LO_REVENUE) as avg2, avg(lo_custkey) as avg3 from lineorder l \n" +
                    "join dates d on l.LO_ORDERDATE = d.d_datekey group by LO_ORDERDATE");
            sql(query).contains("mv0");
        });

What I'm doing:

• For avg(col) function, push down sum(col) and count(col) below join, and rewrite into`divide(sum, count) after rewrite.

Fixes #issue

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

[sonarcloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

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[github-actions]

[Java-Extensions Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[BE Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[FE Incremental Coverage Report]

✅ pass : 95 / 100 (95.00%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	com/starrocks/sql/optimizer/rule/transformation/materialization/common/AggregatePushDownUtils.java	65	70	92.86%	[117, 126, 211, 212, 213]
🔵	com/starrocks/sql/optimizer/rule/transformation/materialization/AggregateFunctionRewriter.java	5	5	100.00%	[]
🔵	com/starrocks/sql/optimizer/rule/transformation/materialization/AggregatedMaterializedViewPushDownRewriter.java	2	2	100.00%	[]
🔵	com/starrocks/sql/optimizer/rule/tree/pdagg/AggregatePushDownContext.java	23	23	100.00%	[]