feat: create Client from connection string or environment variables

[alespour]

Closes #

Proposed Changes

This PR adds support to create Client from

• connection string eg. https://us-east-1-1.aws.cloud2.influxdata.com?token=my-token&database=my-database
  Supported parameters:
  • token
  • org
  • database
  • precision
  • gzipThreshold
• environment variables - same names/style as Influx CLI
  • INFLUX_HOST
  • INFLUX_TOKEN
  • INFLUX_ORG
  • INFLUX_DATABASE
  • INFLUX_PRECISION
  • INFLUX_GZIP_THRESHOLD

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• Tests pass
• Commit messages are conventional

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (2c5132a) 82.43% compared to head (a01b17b) 83.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
+ Coverage   82.43%   83.84%   +1.41%     
==========================================
  Files           9       10       +1     
  Lines         575      681     +106     
==========================================
+ Hits          474      571      +97     
- Misses         87       95       +8     
- Partials       14       15       +1     

Files	Coverage Δ
influxdb3/client.go	92.68% <100.00%> (+1.09%)	⬆️
influxdb3/config.go	90.00% <90.00%> (ø)

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