* add statdb proto and example client
* server logic
* update readme
* remove boltdb from service.go
* sqlite3
* add statdb server executable file
* create statdb node table if it does not exist already
* get UpdateBatch working
* update based on jt review
* remove some commented lines
* fix linting issues
* reformat
* apiKey -> APIKey
* update statdb client apiKey->APIKey
