Incompatibility in source tag format for E-Hentai plugins

[RodolfoFigueroa]

LRR Version and OS

• Version: 0.9.0
• OS: Debian 11
• Install method: Docker

Bug Details
When adding an exhentai archive via URL, the downloader automatically sets the source tag with the provided address, using the format source:https://exhentai.org/<gID>/<gToken>. However, this prevents the E-Hentai metadata plugin from reading said tag, since the corresponding regex expects a tag of the form source:exhentai.org/<gID>/<gToken> (without the https). This in turn causes it to fall back to using a title/cover search, which may cause improperly tagged archives, as mentioned in #907.

Moreover, it is impossible to coerce the downloader plugin to add a source without https, since its URL regex prevents it.

Matching Logs
The following log shows the plugin using the archive title ([OOO] The Winner Takes it All (Splatoon)) to fetch metadata, even though the archive has the tag source:https://exhentai.org/g/2584391/38d9349edf/

[2023-12-04 22:24:07] [E-Hentai] [debug] Using URL https://exhentai.org?advsearch=1&f_sfu=on&f_sft=on&f_sfl=on&f_search=%22%5BOOO%5D%20The%20Winner%20Takes%20it%20All%20%28Splatoon%29%22 (archive title)

[Difegue]

I've had a few reports of this - Something changed with the downloader in 0.9.0 that makes it add https to the source tag, but I haven't investigated yet.