Fixes IgnorePointer and AbsorbPointer to only block user interactions…

* lerp documentation

* Remove Note, Note That from repo

* Improve BorderSide documentation.

* apply review comments

* dart fix --apply

* manual fixes

* DragTarget part 1.

[WIP] Change GestureRecognizer. Sorry.

[WIP] Move from GestureRecognizer to MultiDragGestureRecognizer.

Make it a `Set<int>?`

Get bitwise operations working.

Fix test. Rename to allowedInputPointers.

Convert into a builder.

Improve code with default funciton.

Refactor everything again.

Rename to buttonEventFilter.

Use static function.

Fix analyzer.

Fix private reference.

Use // in private method.

* Fix Renzo request.

* Add `allowedButtonsFilter` everywhere.

* Refactor monoDrag for multi pointer support.

* Fix tests?

* Change default to always true.

* Fix PR comments.

* Completely refactor long press.

* Add forgotten class.

* Revert "Completely refactor long press."

This reverts commit 5038e8603e250e8c928b0f1754fb794b7b75738b.

* Add default value to LongPress

* Refactor doubleTap.

* Relax double tap.

* Write comment in LongPress.

* Use template.

* Use `curly_braces_in_flow_control_structures` for `widgets`

* fix comments

* fix comments

This does a cleanup of the examples, removing all of the "section" markers and extra comments that we don't need anymore now that the samples are no longer in the source code. It also removes the --template arguments from the {@tool dartpad} and {@tool sample} directives, since those are no longer used. It converts two examples that I discovered were still embedded into linked examples in the examples folder.

I didn't delete the templates from the snippets config folder yet, because there are still embedded samples in the dart:ui package from the engine that use them. Once dart:ui no longer uses the templates, they can be removed.

I bumped the version of the snippets package to pick up a change that allows removal of the --template argument.

This extracts the sample code out from the API doc comments, and places them in separate files on disk, allowing running of the examples locally, testing them, and building of slightly larger examples.

This reverts commit d056500b.

This reverts commit 31de052e.

This reverts commit e2490f29.

Update samples to use repo analysis options, Fix sample templates and a ton of analyzer issues (#77868)