fix: Use src/index.ejs by default if present

[jantimon]

BREAKING CHANGE: Use src/index.ejs if no template option is set.

Webpack will pick up src/ by default that means depending on your resolving settings it will use src/index.js, src/index.jsx, src/index.ts ... or similar by default.

This pull request adds the same feature for the html-webpack-plugin.

I would love to know what you think in general about this pull request and if we should support:

src/index.ejs
src/index.html
or
public/index.html

cc @sokra @edmorley

[sokra]

👍

[dennisbot]

Isn't there a way to support dynamic src folder?, for instance, I'm using app folder to set my static files and entry points, or am I missing something?, any comments are welcome, thank you. 😄