Added rule to enforce typehints to closure and arrow functions

[ViniTou]

🎫 Issue	IBX-XXXXX

Description:

for admin-ui 4.6 it reports

 [ERROR] Found 175 errors                                                                                               

For QA:

Documentation:

[konradoboza]

Nice!

[Steveb-p]

Have you tried https://phpstan.org/config-reference#vague-typehints ?

[ViniTou]

@Steveb-p
From what I understood this is something different, it checks types of callable passed, and the checkMissingCallableSignature checks only for phpDoc. What's more it is already set in
https://github.com/ibexa/phpstan/blob/main/phpstan.neon#L6
and dosent work like this rule at all.

[Steveb-p]

What's more it is already set in
https://github.com/ibexa/phpstan/blob/main/phpstan.neon#L6
and dosent work like this rule at all.

Note that this ruleset only applies to this repository. It's not "imported" into the ones using this package.

[ViniTou]

@Steveb-p
I know, still, I was testing it inside that package. Aside from my testing, if it was working as intended same way it should mark fixture files, right?