xiaojunjie e578e2cd98 [Enhancement](Nereids) Explain display extra information (#14802) ...

# Proposed changes

Issue Number: close #14554

## Problem summary

1. provide a function **Plan.extraPlans** that returns extra plans, eg: LogicalSubQueryAlias in LogicalCTE.
2. combine the extra plans and the children in the AbstractPlan.treeString(), distinguished by the * at the beginning.
```
========== PARSED PLAN ==========
LogicalCTE ( aliasQueries=[LogicalSubQueryAlias ( alias=s )] )
|-*LogicalSubQueryAlias ( alias=s )
|  +--LogicalProject ( projects=['s_suppkey] )
|     +--LogicalFilter ( predicates=('s_suppkey = '') )
|        +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=supplier ) )
|           +--UnboundRelation ( nameParts=supplier )
+--LogicalProject ( projects=[*] )
   +--LogicalJoin ( type=CROSS_JOIN, hashJoinConjuncts=[], otherJoinConjuncts=[] )
      |--LogicalSubQueryAlias ( alias=t1 )
      |  +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=s ) )
      |     +--UnboundRelation ( nameParts=s )
      +--LogicalSubQueryAlias ( alias=t2 )
         +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=s ) )
            +--UnboundRelation ( nameParts=s )
```

2022-12-06 12:28:40 +08:00

..

common

[fix](regression) add 'if not exists' to 'create table' to support parallel test (#13576) (#13578)

2022-10-25 16:37:07 +08:00

conf

[chore](regression) add S3 config in conf file and change sf1DataPath #14815

2022-12-06 10:00:50 +08:00

data

[Pipeline](regression) Add ssb flat for pipeline (#14763)

2022-12-05 15:05:23 +08:00

framework

[improvement](fix) return only if all sqls inside one sql file run out (#14791)

2022-12-05 10:18:45 +08:00

java-udf-src

[test](java udf)add new java udf case (#14653)

2022-11-29 16:43:53 +08:00

pipeline

[regression](test) enable fe and be fuzzy test (#14673)

2022-11-30 08:40:32 +08:00

plugins

[regression-test](p0) add p0 test cases (#11624)

2022-08-15 23:12:07 +08:00

script

[Regression](planner) Add tpch plan check (#11181)

2022-07-29 10:45:36 +08:00

suites

[Enhancement](Nereids) Explain display extra information (#14802)

2022-12-06 12:28:40 +08:00