Implement models for searx/answerers

sort froms

Import List from typing to support Python 3.8

Use SearchQuery model

Remove list for List

use Dict instead of dict

Use RawTextQuery instead of SearchQuery, type a dict, and remove unecessary str() method in webapp

improve docstring, remove test code

Implement a BaseQuery class and use that, improve answerer tests based on updated types

Add back sys

fix new linting issues

add space

Update answerer.py - use dict

use future annotations

use BaseQuery for RawTextQuery

.python-version

@@ -0,0 +1 @@
+3.8.0