Migrate mysql connector to V1 interface and refactoring

[garyli1019]

trafficstars

Is your feature request related to a problem? Please describe

Migrate Mysql batch connector to V1 interface and refactoring the code structure in order to get watermark. Watermark will be useful for future CDC implementation

Describe the solution you'd like

A clear and concise description of what you want to happen.

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered.

Additional context

Add any other context or screenshots about the feature request here.

[garyli1019]

subtask of #160