feat(node-ws): Environment variable support

[PeterZhenhh]

The author should do the following, if applicable

• Add tests
• Run tests
• yarn changeset at the top of this repo and push the changeset
• Follow the contribution guide

All tests pass locally.

const { injectWebSocket, upgradeWebSocket } = createNodeWebSocket({ app, env })

[changeset-bot]

🦋 Changeset detected

Latest commit: bf59dbf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hono/node-ws	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.68%. Comparing base (274cf1e) to head (bf59dbf).
⚠️ Report is 15 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1733   +/-   ##
=======================================
  Coverage   92.68%   92.68%           
=======================================
  Files         112      112           
  Lines        3733     3734    +1     
  Branches      946      947    +1     
=======================================
+ Hits         3460     3461    +1     
  Misses        245      245           
  Partials       28       28           

Flag	Coverage Δ
node-ws	81.11% <100.00%> (+0.21%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[yusukebe]

Hey @nakasyou

Can you review this?