Yaoi Manga Online: Remove author name from title

[kana-shii]

Added an option to remove the author name from the title.
The titles are displayed like this in YMO: [manga title] by [manga author] [manga language]
The regex is detecting the last use of the word "by" in the titles and removing everything after it.
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