[Feature] Support statistics in paimon

[Zouxxyy]

Motivation

Table statistics describe the data distribution characteristics of a table. Common statistics include the number of rows, table size, column statistics and more. They are very important for DBMS, especially when executing query plans and optimizing query performance.

Currently, Paimon's statistical information is mainly of two types: one stored in snapshot, and the other in dataFileMeta in the manifest, which have fewer types of statistics.

PIP: https://cwiki.apache.org/confluence/x/HYokEQ.

[Zouxxyy]

Close it since the tasks have been completed, open a new question when we want to support partition stats later.