Use `AdwEntryRow` where possible, add bigger margins/spacing, use some Adwaita styles, and tweak some text.
Like the auto-generated account options, this uses an entry for integer values, instead of the spin button.
Testing Done:
Opened 'Add a Buddy' dialog, and added one.
Opened 'Add a Chat' dialog, and added one, also changed protocols to confirm that the fields changed.