Addition of usage with adafruit_templateengine and other minor changes

[michalpokusa]

⭐ Added:

• Example of using adafruit_httpserver with adafruit_templateengine

🛠️ Updated/Changed:

• Docs now include the new example
• EDIT2: Debug message after handling request now contains query params in path

🏗️ Refactor:

• EDIT2: Removed unnecessary keyword argument when serving files
• EDIT2: 'home.html' now uses HTML comments for Copyright info instead of hashtag ones

[michalpokusa]

This example is similar to Python's "http.server" which serves files from current directory.

EDIT1: Updated image so that it shows the version after adding trailing slash to folders.

It also includes a very basic prevention against path traversal, so just as is, it should not be possible to access e.g. settings.toml etc.

[FoamyGuy]

This can use html comments to match it's filetype

<!--
SPDX-FileCopyrightText: 2023 Michal Pokusa

SPDX-License-Identifier: Unlicense
-->

Beyond that, this looks good to me. I tested successfully on a feather esp32-s2 TFT.

Thank you @michalpokusa

[michalpokusa]

Changed in latest version, I didn't know HTML comments are allowed there, thanks.

[michalpokusa]

Your suggestion from live to add trailing slash for directories was very interesting, so I decided to add that. Items in the directory listing are now also sorted, so first is "..", then folders and then files.

Thanks for review.

[FoamyGuy]

Looks good to me. Tested successfully on Feather ESP32-S2 TFT.

Thanks for the new example and improvements @michalpokusa