fix(examples): repair import URL in the browser example

[sranka]

Proposed Changes

• browser import of @influxdata/influxdb-client-apis is fixed, it ceased to work after upgrading the build system to esbuild
• InfluxDB environment configuration is moved to a module file, it looks better than using a window object
• the configured bucket is used also in the pre-defined query

• CHANGELOG.md updated
• Rebased/mergeable
• Tested manually
• yarn test completes successfully
• Commit messages are conventional

[codecov-commenter]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (46da341) compared to base (48d6857).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #590   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           33        33           
  Lines         1273      1273           
  Branches       306       306           
=========================================
  Hits          1273      1273           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[bednar]

LGTM 👍