* Rename example folder for GroupedConvFwdMultipleD
* Unify example codes
* Change target names
* Add fp16 example for multiple d instance
* Re-format common.hpp
* Add interface 'DeviceGroupedConvFwd'
* Use simpler interface
* Move common conv params out
* Rename conv fwd client example folder
* Add missing include directive
* Update grouped conv instance implementations
* Simplify ckProfiler (grouped conv forward)
* Use GroupedConvFwd to implement client example
* Use greater groupe count in example
* Add custom target to group examples
* Add extra tag param to instance factory function
* Use tag to differentiate factory functions
* Add missing tag argument for factory function
* Remove inheritance relationship
* Remove no-longer used include directive
* Add license in front of file
