MEN-7455, MEN-7573, MEN-7574 - webhook things

[mzedel]

@mineralsfree is 7da09d68fe4e7d3929ec9129f0adcfed508949c8 acceptable?

[mender-test-bot]

Merging these commits will result in the following changelog entries:

Changelogs

mender-server (men-7455)

New changes in mender-server since main:

Features

• aligned webhook listing with updated design (MEN-7573)
• enabled webhook scope selection (MEN-7455)
• extended webhook event details (MEN-7574)