* Update D4A Configuration

D4A had some breaking config changes so this commit fixes them and gets us back into compliance with upstream. And since we run in a docker container we can use the /data/storage default.

* Update D4A Configuration to harmonise with bot mode

Change the default config for D4A to align with bot mode default in mdad. This should also avert a bit of a mess of a potential bug.

* Change D4A Room State Backing Store variable name and fix SPDX Headers

* Align D4A config with new schema

* Fix D4A Config Lint Error

* Update D4A SPDX Entries

* Do not use double quotes around `to_json` values

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Co-authored-by: Slavi Pantaleev <slavi@devture.com>