(feat): fix link adding underline with color

[GrandjeanG]

Currently links are not taking the color link, I added this PR so that we can still add a text decoration with specific color to the links.
I was not able to change the text color, even with many different techniques.

[TJMusiitwa]

@demchenkoalex
It would be great, if we could get this fix launched as for some reason on the version I am using, even setting the links color does not seem to modify it

The link is there but a user can't tell that it is there.

[TJMusiitwa]

Hey @demchenkoalex, sorry to ask again, just hoping if you have some time soon, this could be able merged and deployed. This is all blocking our migration from v1 to deploying our apps with v2. Thank you.

[demchenkoalex]

sorry about that, deploying now

[demchenkoalex]

guys this is not fixed by this PR 😅 this PR adds decoration, but you still can't set link color - it is a bug in gpt_markdown - no matter what I do I can't set color, unless I do some recursion or create completely new span which will drop formatting.

[demchenkoalex]

okay I fixed it anyway - used recursion. Added a todo to remove when the bug is fixed in gpt_markdown. API will change a bit compared to this PR:

all params are optional with no defaults:
linksDecoration <- set the links decoration (like underline) - defaults to nothing
sentLinksColor, receivedLinksColor, sentLinksDecorationColor, receivedLinksDecorationColor <- customise colors of both links and decoration separately. Decoration defaults to the link color (if you'd like same color it is enough to pass only links color)

[demchenkoalex]

published v2.5.2 of flyer_chat_text_message