Add support for webp preview in the media manager

�� Rector and PHPCS fixes

Apply PSR-12 to media_nstree() function

Fix display of media manager namespace hierarchy

When the media manager is called with ns parameter set to a value higher
than the last namespace defined in the wiki, the non-existing namespace
is n

Fix display of media manager namespace hierarchy

When the media manager is called with ns parameter set to a value higher
than the last namespace defined in the wiki, the non-existing namespace
is not added to the hierarchy.

This behavior is not consistent with what happens when the namespace's
name is lower. In this case, an entry is inserted in the tree at the
appropriate location.

Fixed by appending the temporary namespace at the end of the tree if it
was not inserted by the search loop.

Fixes #4276

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Fix Undefined array key warning

E_WARNING: Undefined array key 3 in ./inc/media.php(1700)
E_WARNING: Trying to access array offset on value of type null in ./inc/media.php(1700)

This happens when t

Fix Undefined array key warning

E_WARNING: Undefined array key 3 in ./inc/media.php(1700)
E_WARNING: Trying to access array offset on value of type null in ./inc/media.php(1700)

This happens when the media manager is called with ns parameter set to
a value higher than the last namespace defined in the wiki.

Fixes #4276

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Merge branch 'master' into patch-4

Use str_starts_with/str_ends_with

indentation fix in media.php

code style: line breaks

code style: operator spacing

Rector to rename print to echo calls

coding style: control flow line breaks

coding style: control flow whitespaces

recover comments in list

coding style: function call spacing

codestyle adjustments: PHP constant casing

codestyle adjustments: function declaration braces/spaces

codestyle adjustments: function argument spacing

Apply rector fixes to the rest of inc

Update media.php

Fix old revisions skipping one revision

This changes the UI to start counting at -1, which will instruct the
Revision Management to prepend the current revision to the list of old
revisions returned

Fix old revisions skipping one revision

This changes the UI to start counting at -1, which will instruct the
Revision Management to prepend the current revision to the list of old
revisions returned. This way no special handling for the current
revision has to be done in the UI class anymore and paging works
naturally.

Fixes #3897

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fix deprecated ${var} usage

some more fixes for undefined vars

This makes more use of $INPUT to access $_SERVER and fixes a warning in
one of the search methods.

fix image resizing with width only. fixes #3707

When only a width is given, the image should be resized to this width
always. The code wrongly used the width to create a bounding box
instead.

correctly (re)cache modified images

The previous code used to cache the result of resize and crop image
operations indefinitely. They only time these caches were refreshed were
when the original sou

correctly (re)cache modified images

The previous code used to cache the result of resize and crop image
operations indefinitely. They only time these caches were refreshed were
when the original source changed.

This meant that changes in configuration (eg. the image quality setting)
were never applied to existing images, neither were changes/improvements
in the resizing code.

This patch introduces a new Cache class for these kind of modification
results.

It also removes more duplicated code in media_resize_image and
media_crop_image. Future refactorings may move this code into
File\MediaFile

This code should also fix currently weird results for plugin and
screenshot in the extension manager - TBH I am not 100% sure what
happened there but refreshing the cache once seems to solve the problem.

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