* Addition of FailOnTooManyArgs

* Correct name & only pass in bool

* Improve Boolean Property Summaries

Having the `CaseSensitiveCommands` property summary asking a question whenever Intellisense is invoked seems a bit nonessential instead of *properly* explaining what exactly it does. It would be better if instead, it stated it's use to be more comprehensible to the reader.

### Changes

- Edits the summaries of `CaseSensitiveCommands` and `ThrowOnError` to follow a more methodical convention for boolean property summaries (`Determines whether X ...` rather than `Should X be ... ?`).

This is just a small change to improve upon the current documentation, so it shouldn't conflict with anything.

* "DefaultRunMode should also be "Gets or sets blah blah blah" to be consistent."

Implement configurable command node separators

This fixes #304 over foxbot's PR for the same issue.

Currently, commands are case-sensitive. This PR allows for commands to be case insensitive (which is now the default option).

This adds an (optional) CommandServiceConfig, as well as a DefaultRunMode for commands.

This resolves #368 (for commands where a RunMode is not explicitly specified, a custom default value should be used)