Add iOS support

[GunniBusch]

Hey, would it be possible to add support for safari iOS? It would be really helpful.

[josStorer]

Actually supporting safari iOS is not a difficult task, but unlike macos, it means I would have to upload it to the app store, which is a bit of a tricky choice for me, my intention is just to provide users another choice with a richer feature set, implementing some features that upstream didn't support or refused to support

In fact, the author of upstream have been looking at the extension for safari for a long time (wong2/chatgpt-google-extension#110), and I have mentioned my solution there (wong2/chatgpt-google-extension#110 (comment)), but it seems that he shelved the issue, and I don't quite understand the original author's attitude towards safari support

At the same time, I do not intend to form a substantial competition with the original repo, nor do I intend to use it for profit, which is why I have not uploaded my extension to any app stores so far