all: reformat Talon using talonfmt

[phillco]

Similar to talonhub/community#947, let's use talonfmt, although I prefer a slightly longer maximum line length.

Note that one change to notification.talon is working around a parser issue: wenkokke/talonfmt#17

[wenkokke]

Wouldn’t it make sense to match the line width, especially if this should eventually be upstreamed?

[phillco]

I'd actually propose that we change the knausj width to 88 to match black, or even 100. I didn't realize how many rules would be split up onto multiple lines with a limit of 80, which I think makes them a bit more cumbersome to modify later. I'll raise that in knausj though.

[nriley]

Looks good. Just finished my knausj merge after talonfmt and it didn't do anything unexpected (aside from generating a parse error without a filename).

[wenkokke]

Please use 1.8.0, which fixes the issues with negative numbers and private identifiers.