feat: task pagination

[Sciator]

Closes #614

Proposed Changes

added tasks_api.find_tasks_iter

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• pytest tests completes successfully
• Commit messages are conventional
• Sign CLA (if not already signed)

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (2f9e5ed) 90.30% compared to head (ae2c18b) 90.35%.

Files	Patch %	Lines
influxdb_client/client/tasks_api.py	94.59%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #616      +/-   ##
==========================================
+ Coverage   90.30%   90.35%   +0.04%     
==========================================
  Files          39       39              
  Lines        3456     3493      +37     
==========================================
+ Hits         3121     3156      +35     
- Misses        335      337       +2     

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[bednar]

Thank you for your PR! 👍 Before we can accept it, there are a few requirements that need to be met:

[bednar]

LGTM 🚀