* move utils into database module
* draw help in connections view
* support postgres
* add table_schema field
* implement Pool for Postgres
* fix database tree for postgres
* add tests for selection_top, bottom
* fix clippy warnings
* remove unused function
* get schema
* fix clippy warnings
* show user defined types
* fix cell with when selecting far right cell
* split tests into tree functions
* convert TEXT[] to Vec<String>
* add prefix
* remove column pattern matching