Dump spell checker service info from TSMS.

This is a preparation CL to make TextServicesManagerService (TSMS)
encryption-aware.

This CL changes nothing except for the output of TSMS#dump().

To diagnose File-Based Encryption (FBE) related issues, it would be
useful if we can see if each spell checker service is encryption-aware
or not.  To do that this CL updates TSMS#dump() so that it can include
the result of ResolveInfo#dump() as we have done in
InputMethodManagerService.

This CL also updates TSMS#dump() so that its output can be more
consistent with IMMS#dump().

Bug: 27456430
Change-Id: Ie2321278f1d52533a3cd74d98f1f84c950a8f6d0