* [TD-10842]<feature>:nodejs support schemaless

* [TD-10842]<fix>: fix nodejs connector schemaless API error

* [TD-10842]<feature>:nodejs support schemaless

* fix require mistake

* fix code style constant.js
Co-authored-by: NHuo Linhe <linhehuo@gmail.com>

* [TD-4946]<feature>: Node.js connector support nanoseconds

* [TD-5166]<feature>: Node.js connector support no host settings

Update Node.js connector version to v2.0.8

- Fixed bug when the least significant bits of timestamp may cause time to be converted to 0
- Fixed small display bug with time and sig figs.

Subscription implemented
Continuous Query implemented
Fixed bugs when dealing with null values retrieved from tables
Removed unused code
Added basic performance test code

removed broken code

Docs
- Docs updated
  - include third party connectors links
  - local docs updated to web versions and fixed for compatability
Node
- Async added
- Deleted uncessary code
- Docs updated

Implemented higher level API to make it more modular
Using promises and callbacks
Argument binding is now available e.g query(select ? from ?).bind("*", "table")

- Using _ to indicate variable/function is private and shouldn't be accessed
- Added JSDocs syntax to generate documentation
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