Include custom clippy settings

[nyurik]

Help needed: no idea why tests fail in all of my PRs :(

• All custom clippy settings are now centralized
• add make fix-clippy for automated fixes
• Modified some simple cases, e.g. use _ instead of true|false in a match

Unrelated to this specific change, but I would highly recommend to use justfile -- much cleaner and easier.

Also, I think it would be better to use cargo -p <project> in the makefile and elsewhere - this way it will be cleaner to repeate the broken CI step without the cd ..., and also will not require the test to contain some non-buildable paths - see #865

[Byron]

Thanks a lot (for all these improvements)!

I am loving the new clippy target and will merge once having sorted the makefile TODO. Also I will re-evaluate the justfile, even though last time I still preferred the simplicity and ubiquitousness of makefiles.

Also, I think it would be better to use cargo -p <project> in the makefile and elsewhere - this way it will be cleaner to repeate the broken CI step without the cd ..., and also will not require the test to contain some non-buildable paths - see #865

I will also take a look at this, and agree that -p is underused here. Admittedly, back in the days I wasn't aware of it.

[Byron]

Regarding just, I think it could work and I am keen to convert, despite the general shortcoming that it isn't installed automatically, but installing it should help to get there in the future :).

I check the manual to get some issues clarified:

• follow these steps to get completions
• see how it would get onto CI
• figure out how to change the default action to do a listing of possible commands.

It's a bit sad to see that the listing isn't as pretty as the one-liner that is used here with make :/, but I find comfort that I can contribute headlines myself once I am fed up enough 😁.

Yes, so I think I will have some fun porting the makefile to a justfile - thanks for reminding me!

[Byron]

Thanks again for all your work here!

I will see if not changing directory justfile makes it more readable, but when trying here I thought it was preferable still. I have ideas though and think this can get better no matter what.

I will start a new PR for transcribing the makefile in a moment right after merging once CI is green, excitement!