add Rose Squad Scans

[kana-shii]

closes #6618
Checklist:

• Updated extVersionCode value in build.gradle for individual extensions
• Updated overrideVersionCode or baseVersionCode as needed for all multisrc extensions
• Referenced all related issues in the PR body (e.g. "Closes #xyz")
• Added the isNsfw = true flag in build.gradle when appropriate
• Have not changed source names
• Have explicitly kept the id if a source's name or language were changed
• Have tested the modifications by compiling and running the extension through Android Studio
• Have removed web_hi_res_512.png when adding a new extension

[AwkwardPeak7]

🤔

[kana-shii]

🤔

They still have all of their scanlations in the site, unaccessible anywhere else

[AwkwardPeak7]

They still have all of their scanlations in the site, unaccessible anywhere else

if they have been disbanded for a while, then their stuff could probably be uploaded to mangadex