Lot of entries are missing in the .gitattributes files

[VincentLanglet]

Hi @bwoebi, @morrisonlevi, @PROFeNoM, @labbati

The following file avoid to download non-necessary files/folder when installing the library with composer
https://github.com/DataDog/dd-trace-php/blob/master/.gitattributes

Currently, I get

I assume a lot of them could be added to the gitattributes file too:

• .github/.gitlab folders and github-action-helpers
• docs folder
• example folder
• all .* files
• all .md files
• docker-composer.yml, phpstan.neon, Makefile, etc
• certainly some folder which I don't know what they are useful for (I currently only use the src one)

Would it be possible to add more entries to the gitattributes file ?
I'm ok doing the PR if needed, but I don't know which folder/files can be also added (other than the one I listed)

[pierotibou]

Hello, thanks for reporting this.
The issue auto closed when I merged #2401 as I've taken a first stab at this.