Dark theme feature request

[vedavyawhss]

Steps to reproduce

1. Add Dark theme option.

Expected behavior

Dark theme required for AdGuard Content Blocker app (because it's 2023)

Actual behavior

Screenshot:

Your environment

Description	Value
Adguard Content Blocker version:	(e.g. 1.6.10)
Browser in use:	(Samsung Interner/Yandex Browser)
Filters enabled in Adguard:	(e.g. English, Annoyances)
Device model:	(e.g. Google Pixel)
Operating system and version:	(e.g. Android 7.1.2)
Rooted or not?	(Yes/No✓)

[SHORTYMACK]

Haha rooted or not