Unify button look and rearrange buttons to make them more compact

[corebonts]

• Unify icons (fontawesome public domain fonts)
• Unify button sizes and alignment
• Make the button arrangement beside the input more compact
• Add icon for the menu-trigger and fix it's alignment
• Fix the wrapping of the title (it overflown when using ollama sha-named model files)

[cjpais]

Thanks! This will likely make it into the next release when I do my testing for it and see how it compares to the current. As far as I can see from the code and screenshot it will make it.

Will need to check on the icons, could you give the link to the source?

[corebonts]

Sure! They are part of this collection: https://fontawesome.com/search?o=r&ic=free&s=solid&ip=classic
License: https://fontawesome.com/license/free

Attribution is required by MIT, SIL OFL, and CC BY licenses. Downloaded Font Awesome Free files already contain embedded comments with sufficient attribution, so you shouldn't need to do anything additional when using these files normally.

[corebonts]

I just learned that the "completion" UI has different buttons so I also modify that.

...done

[cjpais]

looks great, thanks