test: api integration tests for be

[pcheremu]

What ❔

API tests for:

• Accounts API
• Transactions API
• Block API

Why ❔

Cover BE API functionality

Checklist

• [ + ] PR title corresponds to the body of PR (we generate changelog entries from PRs).
• [ n/a ] Tests for the changes have been added / updated.
• [ n/a ] Documentation comments have been added / updated.

[github-actions]

API E2E Test Results

206 tests  ±0   206 ✅ ±0   28s ⏱️ -1s
 14 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 610df0d. ± Comparison against base commit 533b4ed.

♻️ This comment has been updated with latest results.

[github-actions]

Unit Test Results

    3 files  ±0    247 suites  ±0   8m 36s ⏱️ -5s
1 970 tests  - 1  1 969 ✅  - 1  1 💤 ±0  0 ❌ ±0 
1 996 runs   - 1  1 995 ✅  - 1  1 💤 ±0  0 ❌ ±0 

Results for commit 610df0d. ± Comparison against base commit 533b4ed.

♻️ This comment has been updated with latest results.

[github-actions]

Visit the preview URL for this PR (updated for commit 610df0d):

• https://staging-scan-v2--pr147-qa-446-replacefixupd-0rte8v0l.web.app
• https://staging-storybook-scan-v2--pr147-qa-446-replacefixupd-ojwpmd3h.web.app

_{(expires Thu, 25 Jan 2024 13:47:20 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: e508f9012944951194447cb8885950b451a24403}

[olehbairak]

@pcheremu I reviewed test cases that were added in the scope of this PR.
The comparison was performed using current code and Swagger documentation.
As a result I can confirm that test cases up-to-date. No new response parts, erased or changed were detected.