Add collision-detector.json to export-ignore in .gitattributes

[sasezaki]

Current archive targets other than src/ will be as follows:

gh api repos/phpstan/phpstan-strict-rules/tarball/HEAD | tar -tzf - | cut -d/ -f2- | sed '/^$/d' | grep -vE '^src/' | sort

collision-detector.json
composer.json
LICENSE
README.md
rules.neon

With this PR, the archive targets other than src/ will be as follows:

gh api repos/sasezaki/phpstan-strict-rules/tarball/patch-gitattributes | tar -tzf - | cut -d/ -f2- | sed '/^$/d' | grep -vE '^src/' | sort

composer.json
LICENSE
README.md
rules.neon

Changes:

• Added collision-detector.json export-ignore
  • collision-detector.json: Configuration for shipmonk/name-collision-detector (a dev tool); not needed by package consumers.

[staabm]

Thank you

[staabm]

Could you do the same thing for https://github.com/phpstan/phpstan-doctrine ?

[sasezaki]

@staabm

Could you do the same thing for https://github.com/phpstan/phpstan-doctrine ?

Done
phpstan/phpstan-doctrine#746

[staabm]

@sasezaki thank you very much.

in case you are interessted you could send a new PR adding the collision detector to all other 1st party PHPStan repos, in which its missing atm.

effectively porting #315 into the other repos (including your .gitattributes change you did in this PR here)