fix(config): immediately save before quitting or suspending

[zoriya]

With the current defaults, closing nvim with :q or <c-w>q fails if still in the debounce_delay period.

[primeapple]

How lovely is that, I like it a lot!
I always use ZZ to close buffers so never realized this is missing!

Any objections @okuuva ?

[okuuva]

With the current defaults, closing nvim with :q or <c-w>q fails if still in the debounce_delay period.

While I haven't run into this myself (I use quite a short debounce delay) it sounds like something that might happen. And having those events in the default immediate_save list sounds like a good idea anyway.

I fixed some typos and changed the scope in the PR title, hope you don't mind. Thanks for the contribution!

[okuuva]

How lovely is that, I like it a lot! I always use ZZ to close buffers so never realized this is missing!

Any objections @okuuva ?

Ah you beat me to it again. None whatsoever, LGTM!