* add c examples and subscribe examples files for other languages

* add query example

* c sample code

* c query example

* node async query example

* node async query example

* add node.js example

* add node.js stmt examples

* add node examples

* doc fix

* rust sql insert example

* rust schemaless examples

* rust stmt examples

* rust query example

* remove go async

* format code

* add sample code

* add sample code

* add example

* add connect examples