Add features to remove records and to edit records.

Add features to remove records and to edit records.
(lsdb-delete-record-functions): New option.
(lsdb-delete-address-cache): New function.
(lsdb-display-records): Use `with-current-buffer' instead of
`with-output-to-temp-buffer' to set buffer modification flag.
(lsdb-mode-map): Add bindings for `lsdb-mode-delete-record' and
`lsdb-mode-edit-record'.
(lsdb-delete-record): New function.
(lsdb-mode-delete-entry): Do not call `interactive-p'.
(lsdb-mode-delete-record, lsdb-mode-delete-entry-or-record): New command.
(lsdb-mode-edit-entry): Clean up.
(lsdb-mode-edit-record, lsdb-mode-edit-entry-or-record): New command.
(lsdb-mode-save): Do not call `interactive-p'; Reset buffer modification
flag.