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

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

[codecov[bot]]

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

```diff @@ 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](https://app.codecov.io/gh/InfluxCommunity/influxdb3-go/pull/36?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=InfluxCommunity) | Coverage Δ | | |---|---|---| | [influxdb3/client.go](https://app.codecov.io/gh/InfluxCommunity/influxdb3-go/pull/36?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=InfluxCommunity#diff-aW5mbHV4ZGIzL2NsaWVudC5nbw==) | `92.68% <100.00%> (+1.09%)` | :arrow_up: | | [influxdb3/config.go](https://app.codecov.io/gh/InfluxCommunity/influxdb3-go/pull/36?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=InfluxCommunity#diff-aW5mbHV4ZGIzL2NvbmZpZy5nbw==) | `90.00% <90.00%> (ø)` | |

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