Add .gitattributes file

Author: ker0x

.gitattributes

@@ -0,0 +1,15 @@
+# Path-based git attributes
+# https://www.kernel.org/pub/software/scm/git/docs/gitattributes.html
+
+/.github/                           export-ignore
+/tests/                             export-ignore
+/.code-samples.meilisearch.yaml     export-ignore
+/.gitattributes                     export-ignore
+/.gitignore                         export-ignore
+/.php-cs-fixer.dist.php             export-ignore
+/bors.toml                          export-ignore
+/docker-compose.yml                 export-ignore
+/docker-entrypoint.sh               export-ignore
+/Dockerfile                         export-ignore
+/phpstan.neon                       export-ignore
+/phpunit.xml.dist                   export-ignore