chore: add Api operation decorator for summary description

[dutterbutter]

What ❔

• Adds @ApiOperation decorator to include summary description of API method

Why ❔

• Provides a description of the API call for automated documentation

Checklist

• PR title corresponds to the body of PR (we generate changelog entries from PRs).
• Tests for the changes have been added / updated.
• Documentation comments have been added / updated.
• Code has been formatted via zk fmt and zk lint.

[github-actions]

API E2E Test Results

179 tests   179 ✔️  31s ⏱️
  11 suites      0 💤
    1 files        0 ❌

Results for commit a2abe50.

♻️ This comment has been updated with latest results.

[github-actions]

Visit the preview URL for this PR (updated for commit a2abe50):

• https://staging-scan-v2--pr37-db-add-description-d-qpk4ci5o.web.app
• https://staging-storybook-scan-v2--pr37-db-add-description-d-vbm4i5ac.web.app

_{(expires Thu, 12 Oct 2023 16:12:17 GMT)}

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[github-actions]

Unit Test Results

       3 files     235 suites   2m 42s ⏱️
1 784 tests 1 783 ✔️ 1 💤 0 ❌
1 809 runs  1 808 ✔️ 1 💤 0 ❌

Results for commit a2abe50.

♻️ This comment has been updated with latest results.

[github-actions]

🎉 This PR is included in version 2.10.1 🎉

The release is available on:

• v2.10.1
• v2.10.1
• v2.10.1
• GitHub release

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