Added blur for Android version older than 12

[sockenklaus]

Closes #733

I added a check for the Android version in app/src/main/java/com/jerboa/ui/components/common/PictrsImage.kt

Android version 12 or newer still uses the Jetpack Compose function .blur().
For older versions I added a BlurTransformation provided by https://github.com/T8RIN/BlurTransformation that is applied to the Coil ImageRequest.

Because I added a new utility class to the project i created a new package com.jerboa.util and moved the existing class Util.kt to this package. This lead to a lot of refactoring to meet the lint requirements. Hence the many changes.

The real changes are in:
app/src/main/java/com/jerboa/ui/components/common/PictrsImage.kt

and

app/src/main/java/com/jerboa/util/BlurTransformation.kt

[dessalines]

I'm guessing you accidentally added a lot more than was necessary for some reason, or github messed up somehow, due to all the conflicts. You might need to start from scratch from main, and copy your new file over.

[sockenklaus]

I'm guessing you accidentally added a lot more than was necessary for some reason, or github messed up somehow, due to all the conflicts. You might need to start from scratch from main, and copy your new file over.

Ugh honestly I'm 99 % sure i made a stupid decision moving and renaming your Util.kt class grouping it with my newly added BlurTransformation.kt in the package com.jerboa.util... I thought grouping together utility classes would clean up the project structure but it got ktlint all upset because the moving and renaming messed up the lexicographical import-order....

I will revert this refactoring and update the PR accordingly this evening.

[dessalines]

Sounds good, thx! There's no rush on it, I usually do frequent releases, so this will get in at some point.

[dessalines]

LGTM, thanks!