feat: use html-loader to default template

[evenstensberg]

What kind of change does this PR introduce?
Fixes #3990

Did you add tests for your changes?
No

If relevant, did you update the documentation?
N/A
Summary
Allows images to be loaded in index.html

Does this PR introduce a breaking change?
No
Other information
N/A

[evenstensberg]

@snitin315 could you update the init snapshots on this PR?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1de879c) 90.89% compared to head (bd86ed3) 90.89%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4008   +/-   ##
=======================================
  Coverage   90.89%   90.89%           
=======================================
  Files          22       22           
  Lines        1692     1692           
  Branches      488      488           
=======================================
  Hits         1538     1538           
  Misses        154      154           

Files	Coverage Δ
packages/generators/src/handlers/default.ts	98.76% <100.00%> (ø)

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[snitin315]

I'll update snaps

[alexander-akait]

@evenstensberg Can you fix CI?

[webpack-bot]

@evenstensberg Thanks for your update.

I labeled the Pull Request so reviewers will review it again.

@alexander-akait Please review the new changes.