Replace --delete with --delete-destination-extra in transfer commands

[MaxTueckeGlobus]

https://app.shortcut.com/globus/story/35029/globus-cli-replace-delete-with-delete-destination-extra-in-transfer-commands

Changes

• Added new --delete-destination-extra flag to globus timer create transfer and globus transfer that mirrors the existing --delete flags behavior
• Added deprecation warning to the old --delete flag for globus timer create transfer and globus transfer

Testing

• Added functional tests for --delete flag deprecation warning
• Added functional tests checking --delete and --delete-destination-extra are mutually exclusive

[m1yag1]

Only minor restructured text markup issues in the changelog fragment.

[m1yag1]

FYI, I went ahead and pulled your changes and did a few manual tests. I received the deprecated warning as expected:

❯ globus timer create transfer --delete $src_coll:/home/share $dst_coll:/~/share --stop-after-runs=1

`--delete` has been deprecated and will be removed in a future release. Use --delete-destination-extra instead.
Timer ID:               ccf036fd-4c83-47e6-8fc3-052eb824f4ab
Name:                   CLI Created Timer [2024-10-15T15:25:11.472322]
Type:                   None
Submitted At:           2024-10-15 15:25:12
Status:                 loaded
Last Run:               None
Next Run:               2024-10-15 15:25:12
Schedule:               once at 2024-10-15 15:25:12
Number of Runs:         0
Number of Timer Errors: 0

I was also able to create a timer with the new flag:

globus timer create transfer --delete-destination-extra $src_coll:/home/share $dst_coll:/~/share --stop-after-runs=1

Timer ID:               524c26ea-0b90-4a37-8d62-4ebbadd2b598
Name:                   CLI Created Timer [2024-10-15T15:27:29.787513]
Type:                   None
Submitted At:           2024-10-15 15:27:31
Status:                 loaded
Last Run:               None
Next Run:               2024-10-15 15:27:30
Schedule:               once at 2024-10-15 15:27:30
Number of Runs:         0
Number of Timer Errors: 0

Plz, note that --delete-destination-extra does not have backticks like delete in the deprecation warning message..