[fix-576][admin] Fix the exception caused by metadata switching

[fix-574] [web] fix datastudio->tabs close_other can not close first tab

[Fix-577][web]fix datastudio select datasource alias is ""

[Feature-567][*] Release v0.6.4

[Fix-571] [client] Fix CDCSOURCE String can't be cast to Timestamp

为mysql source cdc添加jdbc连接参数；升级1.13和1.14 cdc连接版本（2.2.0->2.2.1）

[Optimization-564][metadata] Optimization MySqlTypeConvert

[Optimization-562][web] Remove preset-ui

[Fix-556][adimin,gateway] Fix flinkLibPath in K8S configuration is null

[Feature-558][web] add delete button of database Manage

[Feature-552][web] Hide export StreamGraphPlan button when not FlinkS…

 [Optimization-550][assembly] Optimization package 

[Feature-318][core] Add column lineage from db sql

[Feature-545][admin] Add Task Pool to solve frequent database writes

[Fix-542][web] Fix the name of tab can't be modified when modify task…

[Fix-541]  Fix the problem that the datasource && metadata does not set alias 

[Feature-318][core] Add column lineage from db sql