FTP!

[hez2010]

Built-in FTP support

This PR aims to add support to FTP and FTPs.

Closes #1342

TODO

• Auto detect TLS/SSL settings - must
• Enumeration and navigation - must
• Path bar integration - must
• Network credentials support
  • Ask credentials before connecting - must
  • Remember network credentials - better to have
  • Windows hello integration - not goal
• Filesystem operations:
  • Copy and paste (akas. download and upload) - must
  • Delete and rename - must
  • Move and cut - better to have
• Properties integration: statistics, owner, hash (if server supports), and permissions - better to have
• Cache integration - better to have
• Background transfer even when files is closed - better to have
• Enumeration and file operations abstract layer for better maintainability - not goal
• SFTP - not goal

[d2dyno1]

Closes #1342

[hez2010]

Closes #1342
Closes #2407

It only closes #1342, SFTP is a protocol over SSH which is completely different from FTP.

[d2dyno1]

How's progress going?

[hez2010]

How's progress going?

Just don't have too much time on it recently. I'm planning to implement remaining things next week.

[yaira2]

@hez2010 Thanks for the update! If it's ready in the next couple of weeks, we should be able to include it in the next update.

[hez2010]

@yaichenbaum Do you think I should close this PR for now? I may push some unfinished work, which will trigger unnecessary CI.
I can reopen the PR once it's ready for review.

[yaira2]

@hez2010 I don't think the pipeline runs on draft PRs.

[hez2010]

I want to split this PR into two PRs. One is to remove IStorageItemWithPath and use IStorageItem for all cases (contributes to #4180, so operations to a file itself (Remove, Rename, and GetBasicProperties) could be implemented by just class XxxStorageItem : IStorageItem), and we can determine the type of a file and operate it by getting its implementation type instead of reviewing the path with lots of helper methods. Another one is to implement FTP after the previous one done.

Therefore, I'm closing this PR for now.

[d2dyno1]

Looking forward to removal of IStorageItemWithPath!

[yaira2]

@hez2010 Thanks for the update!