Remaking the example

[EchoEllet]

The first steps of remaking the example

This pull request is not ready yet

[Alspb]

In this PR home_page.dart file was removed, which contained a triple tap for paragraph selection implementation (see #468, #1318, #1758), PR #983.
Sure, putting a fix into an example file is not a quite correct approach.
@EchoEllet, could you please take a look whether this triple tap functionality might be resurrected?

[EchoEllet]

In this PR home_page.dart file was removed, which contained a triple tap for paragraph selection implementation (see #468, #1318, #1758), PR #983.

I removed it in addition to the image and video embeds for the web because it wasn't quite implemented. The docs say the web is supported. Only for the example, though, you will get a runtime exception due to missing embeds in the production app.

The implementation in the extensions package was missing some things that are only implemented in the example.

I think we need to recreate the example once again. It could use a lot of improvements as I made it very quickly at the time of this PR, though this shouldn't be a high priority issue.

Regarding the mentioned issue, I'm not quite familiar with it.