Add record filtering and `DataMigration::loadFile()`

Useful to load a single record from a specific data file
Move new setting data install Install/Config/Data/SettingData.php

- Works for fresh install and incremental migration
- Centralize new data
- Addresses issues in https://github.com/croogo/croogo/commit/36ebb5cfb6844b23205347392acb515ae206a828#commitcomment-5199626

Closes #287