Update: enforceForClassMembers computed-property-spacing (fixes #12049)

[mdjermanovic]

What is the purpose of this pull request? (put an "X" next to item)

[X] Changes an existing rule #12049

What rule do you want to change?

computed-property-spacing

Does this change cause the rule to produce more or fewer warnings?

More if the option is set to true. Default is false.

How will the change be implemented? (New option, new default behavior, etc.)?

New option enforceForClassMembers

Please provide some example code that this change will affect:

/*eslint computed-property-spacing: ["error", "never"]*/

class Foo {
  [a ]() {}
  get [ b ](){}
  set [ b ](val){}
  static [ c](){}
  static get [ d](){}
  static set [d ](val){}
}

What does the rule currently do for this code?

No errors.

What will the rule do after it's changed?

/*eslint computed-property-spacing: ["error", "never", { "enforceForClassMembers": true }]*/

class Foo {
  [a ]() {} // error
  get [ b ](){} // error
  set [ b ](val){} // error
  static [ c](){} // error
  static get [ d](){} // error
  static set [d ](val){} // error
}

Autofix:

/*eslint computed-property-spacing: ["error", "never", { "enforceForClassMembers": true }]*/

class Foo {
  [a]() {}
  get [b](){}
  set [b](val){}
  static [c](){}
  static get [d](){}
  static set [d](val){}
}

What changes did you make? (Give an overview)

New option.

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

[kaicataldo]

LGTM, thanks!

[g-plane]

LGTM, thanks!

[mysticatea]

LGTM.