Exclude CI and build artifacts from source archives

.gitattributes

@@ -0,0 +1,40 @@
+# Do not include CI/config metadata in source release tarballs
+.gitea/ export-ignore
+.github/ export-ignore
+.gitignore export-ignore
+.gitattributes export-ignore
+
+# Do not include generated phpize/autotools build directories
+contrib/php/build/ export-ignore
+contrib/php/include/ export-ignore
+contrib/php/autom4te.cache/ export-ignore
+contrib/php/.deps/ export-ignore
+contrib/php/.libs/ export-ignore
+contrib/php/modules/ export-ignore
+contrib/php/libs/ export-ignore
+
+# Do not include temporary/generated build files
+autom4te.cache/ export-ignore
+config.log export-ignore
+config.status export-ignore
+config.cache export-ignore
+Makefile export-ignore
+Make.rules export-ignore
+libtool export-ignore
+stamp-h1 export-ignore
+
+# Do not include object/build artifacts
+*.o export-ignore
+*.do export-ignore
+*.to export-ignore
+*.lo export-ignore
+*.la export-ignore
+*.a export-ignore
+*.so export-ignore
+*.so.* export-ignore
+*.dep export-ignore
+*.gcno export-ignore
+*.gcda export-ignore
+*.orig export-ignore
+*.rej export-ignore
+*~ export-ignore