Hope to add createAlignedTimeseries in SessionPool（希望在sessionPool中增加createAlignedTimeseries方法）

**Is your feature request related to a problem? Please describe.**
使用otdb-session-0.13.0-SNAPSHOT.jar，本人程序都是通过sessionPool来操作iotdb，但是该类缺少创建对齐时间序列方法，只能再创建新session来创建对齐序列。

**Describe the solution you'd like**
不额外创建session，通过sessionPool来创建对齐时间序列

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.

Start by locating the Java SessionPool class and the existing createAlignedTimeseries operation available through a direct session. Inspect how SessionPool exposes other session operations; done means callers can create aligned time series through the pool without creating an additional session, with the relevant client tests updated if present.

Written by the indexing model from the issue text.