Introduce a dedicated `OrthConnectorConfig` global object and its companion reset function.

Also improve the CellStateStyle JSDoc, in particular about the jetty size properties.

BREAKING CHANGES: `OrthConnector` is now configured with the global `OrthConnectorConfig` object.
The following properties that were previously hold by `EdgeStyle` have moved to `OrthConnectorConfig`:
  - `orthBuffer` to `buffer`
  - `orthPointsFallback` to `pointsFallback`

# Conflicts:
#	CHANGELOG.md

tbouffard deleted the feat/introduce_OrthConnectorConfig branch

This was referenced