New: func-call-spacing rule (fixes #6080)

[btmills]

What issue does this pull request address?
#6080 - support requireSpacesInCallExpression and disallowSpacesInCallExpression by replacing the no-spaced-func rule with a new func-call-spacing rule having "never" (default) or "always" modes.

What changes did you make? (Give an overview)

Copied the no-spaced-func rule, named the new rule func-call-spacing, and added support for "never" and "always" options.

Is there anything you'd like reviewers to focus on?

1. I haven't touched no-spaced-func. What's the proper way to indicate that it's deprecated in favor of func-call-spacing?
2. For compatibility with JSCS requireSpacesInCallExpression, "always" permits newlines within calls.

[mention-bot]

@btmills, thanks for your PR! By analyzing the annotation information on this pull request, we identified @nzakas, @alberto and @kaicataldo to be potential reviewers

[eslintbot]

LGTM

[eslintbot]

LGTM

[eslintbot]

LGTM

[eslintbot]

LGTM

[btmills]

I followed @alberto's example from #6746 and attempted to add deprecation notices and replace references to the old rule.

[nzakas]

I think we need to come to some decision on the right way to mark rules as deprecated. See my note on his PR.

[ljharb]

what if i want a space but never a newline?

[mysticatea]

Disallowing always line breaks sounds good to me.
We can add an option such as allowLineBreaks later if people want.

[nzakas]

@btmills are you going to finish this up?

[eslintbot]

LGTM

[eslintbot]

LGTM

[btmills]

I've added the allowNewlines boolean option, which is off by default. I also followed the example set in #6746 to deprecate no-spaced-func. This is ready for another round of review.

[ilyavolodin]

LGTM