Router: break between curly and catch, like else

[kitbellew]

Use the setting for 'else' after curly 'if' to determine whether to add
newlines before 'catch' and 'finally'.

Those who prefer

  if (a) {
    b
  }
  else c

over

  if (a) {
    b
  } else c

likely also prefer

  try {
    a
  }
  finally b

over

  try {
    a
  } finally b

[kitbellew]

@olafurpg @poslegm @tanishiking PTAL. i didn't generate scala-repos, as this behaviour is under an optional flag (and there are unit tests), but let me know if you'd prefer it.

[olafurpg]

LGTM 👍 This looks like a reasonable change that's consistent with alwaysBeforeElseAfterCurlyIf