Allow setting user ID and token in preferences for users who have trouble automatically fetching them.
Also, improve the error message when the token expires.
* Explicitly use `network.cloudflareClient` instead of `super.client`
... but only if the parent is `HttpSource` or `ParsedHttpSource`
* Remove use of `network.client`
... replaced with `network.cloudflareClient` or `super.client` if the
parent class sets `client` to `network.cloudflareClient` already.
* import all temporarily
* use `getPreferencesLazy()`
regex: lazy\s*\{\s*Injekt\.get<Application>\(\)\.getSharedPreferences\(\"source_\$id\"\, 0x0000\)(!!)?\s*\}
* use `getPreferences()`
regex: Injekt\.get<Application>\(\)\.getSharedPreferences\(\"source_\$id\"\, 0x0000\)(!!)?
* `getPreferences` and `getPreferencesLazy` with migration
regex to find: getPreferences\(\)\s*\.
* preferences edge cases
* run lint
* why kotlinter not add newline
* bruh
* bump
* unused import not caught by kotlinter
* review suggestions on all files
* bump after merge main
* review
* reduce usage of
