Supply formatting options to control location of `:` in multi-line base-lists or constructor initializers

[CyrusNajmabadi]

From https://github.com/dotnet/roslyn/pull/36867

Can you please open an issue for this? I think it would also be nice to have a similar formatting rule for specifying BaseList of a type declaration.

We should have a way to allow users to specify where the : should go if an inheritance list is wrapped or a this()/base() list is wrapped. For example, in Roslyn the vast majority (95%+ of this/base calls include the : with the this/base if this/base is wrapped).

There should be options to help enforce this, which woudl then cause warnings for violations by the formatting anlayzer.

[vatsalyaagrawal]

Design review conclusion:

• Fix would only apply to multi-line case. Fix does not apply to single line case.
• We will create a formatter to place on the next line for any split expression (if closing parenthesis and this/base are not on same line)
• We will also have a two state option,
  1. Default is it to change the users code.
  2. Users can opt-out of default behavior to "leave-as is" behavior.