Add user agent and bump dependencies so that cargo install works again

[pine-free]

The package was broken for me, the requests to wikipedia's api were returning with 403 forbidden because they had no user agent set, and cargo install wiki-tui did not work because there were 2 versions of ratatui present

I bumped the versions and the rust version, and added a user agent, as well as a general "wiki client" scaffolding for use throughout the package

[pine-free]

This resolves #265 and #267

[AetherSky-arch]

Tested on Ubuntu 22.04.
This does not seem to fix #267, still works for #265 tho

[pine-free]

Tested on Ubuntu 22.04. This does not seem to fix #267, still works for #265 tho

Huh, I tested on Ubuntu 24 and it did work. Will look into it. Thanks for the report

[AetherSky-arch]

Was worried I had reported an error caused by an outdated system, so I tested it on an up-to-date Arch machine.

Can confirm #267 remains unresolved.

[EvilsSouls]

Was worried I had reported an error caused by an outdated system, so I tested it on an up-to-date Arch machine.

Can confirm #267 remains unresolved.

It worked for me when I switched to the correct branch (feature/user-agent) before running cargo build --release.

[Builditluc]

The issue has been fixed by #273