This patch implements the template generation of the template:
searx/templates/simple/icons.html
by the way the icon set (the icon names) has been normalized:
film-outline --> film
magnet-outline --> magnet
..
warning --> alert
Some missing (categorie) icons had been added.
Some of the ionicons are not suitable for a dark theme, we fixed the svg
manually in src/svg/ionicons:
- https://github.com/searxng/searxng/pull/4284#issuecomment-2680550342
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
