Type width in error messages

[bjatkin]

Fixes microsoft/TypeScript#45896

Currently the complier will print "... is not assignable..." errors on a single line

prettyFormatLongTypes.ts: - error TS2882: Type '{ b: { c: { e: { f: string; }; }; }; }' is not assignable to type '{ b: { c: { e: { f: number; }; }; }; }'
 The types of 'b.c.e.f' are incompatible between these types.
    Type 'string' is not assignable to type 'number'.

This PR puts types onto their own lines when they are >30 characters in length

prettyFormatLongTypes.ts: - error TS2882: Type:
  { b: { c: { e: { f: string; }; }; }; }

is not assignable to type:
  { b: { c: { e: { f: number; }; }; }; }

  The types of 'b.c.e.f' are incompatible between these types.
    Type 'string' is not assignable to type 'number'.

This PR is the typescrpt-go version of this PR microsoft/TypeScript#61829