Log Edit Raw Contacts modal (1/2)

Log this modal as Enum type SHOW_RAW_CONTACT_PICKER, so that we can have
more editor events added in the future.

When user clicks edit and this modal doesn't show, log EditorEvent as
(SHOW_RAW_CONTACT_PICKER, 0);
when user clicks edit and this modal does show, log EditorEvent as
(SHOW_RAW_CONTACT_PICKER, numberRawContacts).

Bug: 32678380

Test: Manually tested the log messages when edit a contact from
1) 1 writable
2) 2 and more writable
3) 1 read-only
4) 2 read-only
5) 1 writable and 1 read only

Change-Id: I8043e31d0051815b57f5f126ea4b66be551bcb9d