feat: better expose HTTP Error header information in error handling on write

[karel-rehor]

Proposed Changes

Http Headers are already part of InfluxException. In the WriteApi they can be accessed with an EventListener. With WriteApiBlocking they get thrown in write method calls.

• print selected headers useful for debugging to error logs
• add an example of working with headers from InfluxException

Note that Cloud v3 and OSS v2 handle exceptional streamed or batched data on the server side a little bit differently. It appears that with v3 cloud batches of data that include some invalid records along with valid ones, will still write the valid records and return a success HTTP status code. OSS v2 on the other hand returns an error status triggering an exception.

Checklist

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

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.

Project coverage is 88.50%. Comparing base (7b39e0c) to head (3824efe). Report is 9 commits behind head on master.

Files	Patch %	Lines
.../influxdb/client/write/events/WriteErrorEvent.java	77.77%	1 Missing and 1 partial :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #745 +/- ## ============================================ - Coverage 88.51% 88.50% -0.02% + Complexity 786 785 -1 ============================================ Files 174 174 Lines 7195 7203 +8 Branches 405 405 ============================================ + Hits 6369 6375 +6 - Misses 696 697 +1 - Partials 130 131 +1 ```

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