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

[bednar]

Proposed Changes

1. Added PingService to check status of OSS and Cloud instance.
2. Deprecates:
   • InfluxDBClient.health()
   • InfluxDBClientKotlin.health()
   • InfluxDBClientScala.health()

Checklist

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

[codecov-commenter]

Codecov Report

Merging #272 (c1204c4) into master (90471b8) will decrease coverage by 0.08%.
The diff coverage is 37.50%.

❗ Current head c1204c4 differs from pull request most recent head 8465ebc. Consider uploading reports for the commit 8465ebc to get more accurate results

@@             Coverage Diff              @@
##             master     #272      +/-   ##
============================================
- Coverage     89.13%   89.05%   -0.09%     
  Complexity      473      473              
============================================
  Files           145      145              
  Lines          5790     5791       +1     
  Branches        276      275       -1     
============================================
- Hits           5161     5157       -4     
- Misses          549      554       +5     
  Partials         80       80              

Impacted Files	Coverage Δ
...java/com/influxdb/internal/AbstractRestClient.java	80.00% <0.00%> (-20.00%)	⬇️
...fluxdb/spring/health/InfluxDB2HealthIndicator.java	44.44% <0.00%> (+17.77%)	⬆️
...client/kotlin/internal/InfluxDBClientKotlinImpl.kt	100.00% <100.00%> (ø)
...com/influxdb/client/flux/internal/FluxApiImpl.java	100.00% <100.00%> (ø)
...lient/scala/internal/InfluxDBClientScalaImpl.scala	100.00% <100.00%> (ø)
...fluxdb/client/internal/AbstractInfluxDBClient.java	92.59% <100.00%> (+0.13%)	⬆️
...m/influxdb/client/internal/InfluxDBClientImpl.java	87.71% <100.00%> (+0.44%)	⬆️

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