feat(mails): add Workspace mail CLI with pagination and parsed from fields

Manage the OnlyOffice Mail addon via oo mails using existing ONLYOFFICE_* creds,
with automatic page fetching past the 25-message API cap and fromName/fromAddress columns.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -19,3 +19,5 @@ ONLYOFFICE_PASS=
 # Optional defaults for calendar/project helpers:
 ONLYOFFICE_CALENDAR_ID=1
 ONLYOFFICE_PROJECT_ID=33
+
+# oo mails uses ONLYOFFICE_URL/USER/PASS above (Workspace Mail addon).