Add known non-default extension priorities in a config

src/configs/mod_priority

@@ -0,0 +1,27 @@
+apc=25
+apcu_bc=25
+apcu-bc=25
+blackfire=30
+decimal=30
+ds=30
+grpc=30
+http=25
+pecl_http=25
+pecl-http=25
+inotify=30
+libvirt-php=40
+mailparse=25
+maxminddb=30
+memcached=25
+mysqlnd=10
+mysqlnd_ms=30
+opcache=10
+pdo=10
+phalcon=35
+protobuf=30
+psr=15
+rdkafka=30
+swoole=25
+vips=30
+xml=15
+zstd=30