feat: copy url and redirect to signal when share link is clicked

[UnknownSean8]

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Description

This is the same PR from the other signal additional PR. I have a problem with my git so I had to recreate the branch.

For the implementation, I feel like there is still improvement that can be made, especially with the duplicated copy URL code. Feel free to let me know if there are any ideas/comments.

Also, just an idea, maybe we could add in a "Redirecting to Signal" infobox or something to let the user know that it is redirecting to signal.

Related issue

• Add Signal to Modal Share Page Component #694

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[UnknownSean8]

@andrewtavis Hi, I've fixed the comments that you listed yesterday. Please let me know if any changes are needed. Also, I've closed the previous PR but I don't know if you want it to be deleted or not. Thanks!

[andrewtavis]

Hey @UnknownSean8! The idea of maybe a toast to that says that Signal is going to open is a good one 😊 Let's maybe not include it in here, but have a separate issue that implements this for all the share functionality that needs it? Would you want to work on that? I could make the issue :)

[UnknownSean8]

Sounds like a good idea! I would be happy to work on it. Thanks!

[andrewtavis]

Really really nice, @UnknownSean8! Let's maybe change the Copied to URL copied, but I'll do that in the keys :) Will make the issue for the toasts now!