feat: add PingService to check status of OSS and Cloud instance

[bednar]

Closes #211

Proposed Changes

• Added PingService to check status of OSS and Cloud instance.
• Deprecates: InfluxDBClient.health(): instead use InfluxDBClient.ping()

Checklist

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

[codecov-commenter]

Codecov Report

Merging #352 (c0cf6e4) into master (d284254) will increase coverage by 0.06%.
The diff coverage is 95.65%.

@@            Coverage Diff             @@
##           master     #352      +/-   ##
==========================================
+ Coverage   92.74%   92.81%   +0.06%     
==========================================
  Files          27       27              
  Lines        2275     2297      +22     
==========================================
+ Hits         2110     2132      +22     
  Misses        165      165              

Impacted Files	Coverage Δ
influxdb_client/client/influxdb_client.py	97.77% <95.00%> (-0.36%)	⬇️
influxdb_client/__init__.py	100.00% <100.00%> (ø)
influxdb_client/client/__init__.py	100.00% <100.00%> (ø)
influxdb_client/client/write/__init__.py	100.00% <100.00%> (ø)
influxdb_client/api_client.py	69.28% <0.00%> (+0.37%)	⬆️

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