feat(web-api): add admin.conversations.{createForObjects|linkObjects|unlinkObjects} methods

[zimeg]

Summary

This PR adds the following API methods to @slack/web-api:

• https://docs.slack.dev/reference/methods/admin.conversations.createForObjects
• https://docs.slack.dev/reference/methods/admin.conversations.linkObjects
• https://docs.slack.dev/reference/methods/admin.conversations.unlinkObjects

Preview

Examples of these methods with placeholder values can be found below:

const response = await client.admin.conversations.createForObjects({
  object_id: "0019000000DmehKAAR",
  salesforce_org_id: "0019000000DmehKAAR",
  invite_object_team: false,
});

const response = await client.admin.conversations.linkObjects({
  channel: "C0123456789",
  record_id: "0019000000DmehKAAR",
  salesforce_org_id: "0019000000DmehKAAR",
});

const response = await client.admin.conversations.unlinkObjects({
  channel: "C0123456789",
  new_name: "example-",
});

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.71%. Comparing base (74a47aa) to head (24636cd).

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2300      +/-   ##
==========================================
+ Coverage   92.69%   92.71%   +0.02%     
==========================================
  Files          38       38              
  Lines       10609    10639      +30     
  Branches      683      683              
==========================================
+ Hits         9834     9864      +30     
  Misses        763      763              
  Partials       12       12              

Flag	Coverage Δ
cli-hooks	95.23% <ø> (ø)
cli-test	94.74% <ø> (ø)
oauth	77.39% <ø> (ø)
socket-mode	61.87% <ø> (ø)
web-api	97.95% <100.00%> (+<0.01%)	⬆️
webhook	96.66% <ø> (ø)

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[zimeg]

📝 Leaving a quick TODO comment!

[zimeg]

Hoping to generate these responses before review 🙏 ✨

scripts/generate-web-api-types.sh