avro

AVRO-2839: PHP Add zstd and snappy codec support. (#886)

* AVRO-2839: Add zstd and snappy codec support.

* Fixed wrong sprintf calls

* Added zstd and snappy ext.

* Added zstd and snappy compiled ext.

* Added dev package.

* Added libzstd-dev

* Fixed install

* Fixed install 2

* Added debug modules output

* Added debug info output

* Added so to ini

* Added so to ini 2

* Path fix

* Added all codec fixture files to the test execution.

* Added crc32 to snappy compression

* Removed crc from compressed string.

* More work on crc32