added postgres adapter

[wralith]

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Feature: This PR adds postgres adapter for src/lib/data

Unimplemented Methods

find() and findAll(): I need more instruction on how you want them to work. Maybe additional type with filter conditions.

Behaviors

• Opens new connection to db each request. Pool can be applied for improvement.
• add, update and replace throws if param type does not match with table.

Assumptions

• Table that match type T already created in the database.
• Primary key of table is id

Introduced Dependencies

• deno-postgres driver handling connection between code and database.
• bld I couldn't find compatible query builder to use with deno-postgres and wrote simple one. Can be replaced if there are alternative to implement queries with generic data type.

Tests

• I couldn't find a way to mock postgres in memory for deno, tests requires postgres container.
• Not compatible with current CI flow. So marked to ignore in bdd.