chat: auto detect links (#8028)

@ConradIrwin here's our current implementation for auto detecting links
in the chat.
We also fixed an edge case where the close reply to preview button was
cut off (rendered off screen).

Release Notes:

- Added auto detection for links in the chat panel.

---------

Co-authored-by: Remco Smits <62463826+RemcoSmitsDev@users.noreply.github.com>

Cargo.toml

@@ -199,6 +199,7 @@ indoc = "1"
 # We explicitly disable a http2 support in isahc.
 isahc = { version = "1.7.2", default-features = false, features = ["static-curl", "text-decoding"] }
 lazy_static = "1.4.0"
+linkify = "0.10.0"
 log = { version = "0.4.16", features = ["kv_unstable_serde"] }
 ordered-float = "2.1.1"
 parking_lot = "0.11.1"