new (1.17) animation for spearman/swordsman

[white-haired-uncle]

Got an image error due to spearman-attack-ranged changes. I don't understand animations and don't feel like trying to figure this out.

1.16/data/core/images/units/human-loyalists/spearman-attack-ranged.png
1.16/data/core/images/units/human-loyalists/spearman-attack-ranged2.png
1.17/data/core/images/units/human-loyalists/spearman-attack-ranged1.png
1.17/data/core/images/units/human-loyalists/spearman-attack-ranged2.png
1.17/data/core/images/units/human-loyalists/spearman-attack-ranged3.png

I'm guessing the idea is not just to replace the missing one, but to update the sequence?

Effected: units/demon_infiltrators*.cfg

See also units/human-loyalists/spearman-attack-s-*

EDIT: Found more. I'm submitting them to this thread: https://forums.wesnoth.org/viewtopic.php?t=57288

[Dugy]

Copypasting the animation from the core units over the old one is probably the best approach here.

I am sorry for not doing it myself, but the unstable versions have become rather inconvenient to set up on Linux once they introduced flatpak, so I would need to spend quite a lot of effort to test it.