remove manually created typing d ts file (#249)

* Rename file

".d.ts" files are files that are automatically generated during compilation (in case option is set) and shouldn't be created manually.

* Export types and interfaces

* Add missing imports

src/components/source/SourceOptions.tsx

@@ -21,6 +21,7 @@ import TriStateFilter from 'components/source/filters/TriStateFilter';
 // eslint-disable-next-line import/no-cycle
 import GroupFilter from 'components/source/filters/GroupFilter';
 import SeperatorFilter from 'components/source/filters/SeparatorFilter';
+import { ISourceFilters, IState } from 'typings';
 
 interface IFilters {
     sourceFilter: ISourceFilters[];