feat: adding at_repl to packages

[Xlin123]

- What I did

• Created a Dart REPL. Published it onto pub.dev with atsign org https://pub.dev/packages/at_repl
• All of the instructions for installation/use are on pub.dev.
• I retracted the latest version until the PR merges.

- Verify

Added more thorough testing to the project. Please let me know if I'm missing certain test cases.

- Description for the changelog

Created dart repl.

[JeremyTubongbanua]

After reading https://pub.dev/packages/at_repl I tried installing it via locally

This is how I installed it locally which worked for me

cd packages/at_repl
dart pub global activate .  --source path

The instructions on how to download it locally on pub.dev did not work for me.

[JeremyTubongbanua]

I put in an incorrect atSign (that I do not have the keys to)

It did not read my keys

But it continued to put me in REPL

jeremytubongbanua@Jeremys-M2-Air ~ % at_repl -a @jeremy0 -r root.atsign.org:64 -v --no-enforceNamespace
Looking up secondary server address for @jeremy0 on root.atsign.org:64
Connecting...   Authentication failed: PathNotFoundException: Cannot open file, path = '/Users/jeremytubongbanua/.atsign/keys/@jeremy0_key.atKeys' (OS Error: No such file or directory, errno = 2)
Disconnected, atClient is null.
You don't need to include name spaces.
@jeremy0 scan
Unhandled exception:
Exception: AtClient is null for some reason...
#0      REPL.executeCommand (package:at_repl/src/at_repl.dart:42:7)
#1      main (file:///Users/jeremytubongbanua/GitHub/at_tools/packages/at_repl/bin/at_repl.dart:144:39)
<asynchronous suspension>

[JeremyTubongbanua]

In /help Typo?

regex (e.g. _scan test@alice.*)

Should it be /scan not _scan ?

[Xlin123]

there is a known bug related to this ticket
after that ticket is resolved, I'm planning to add at least a test for shared_keys.

[Xlin123]

Need to wait until the at_client changes get pushed to pub.dev

[gkc]

Need to wait until the at_client changes get pushed to pub.dev

Why?

[Xlin123]

I'm still getting the "Invalid or Corrupted Pad block" error for the shared_keys. I think it's fixed now, but it isn't in the latest version on pub so I'm just waiting.

Should I open the PR back up?

[gkc]

Can you test with the at_client_sdk trunk branch and verify the issue has been fixed please?

[gkc]

@Xlin123 Once you've verified that the issue has been fixed, please review & approve this PR so I can publish at_client v 3.0.62

[gkc]

Nice work @Xlin123