fix: Update some incorrect images, and fix downscaling issues for some sprites

[FallenDeity]

In reference #233 changed the downscaling algorithm to use NEAREST the following are the affected back sprites from generation 9

1005.png
1006.png
1007.png
1008.png
1009.png
1010.png
1018.png
1020.png
1021.png
1022.png
10277.png
959.png
962.png
975.png
977.png
981.png
983.png
984.png
989.png
992.png
993.png

@Naramsim, @kyledovey perhaps we can selectively pick the ones which look fine and remove the distorted ones and leave them for future todo

some additional fixes

• previously totem sprites had some downscaled non pixel or 3ds art which I updated to reflect the same species pixel art since totems have no visual difference other than size & weight so the existing species art should suffice
• greninja battle bond (10116) was portrayed as greninja ash (10117) so fixed that to reflect a normal greninja since battle bond is just an ability not a form (this reflects in official artwork too) and added greninja ash sprites to 10117
• fixed minior meteor sprites, in meteor form there is no visual difference between shiny and non shiny that is only apparent in core form with shields down
• fixed pumpkaboo/gourgeist sprites before it had some blurred 3ds'ish art? picked up the new sprites from smogon sheet and added them from small, large and super
• updated 2 gmax forms for flapple/appletun and toxtricity amped/low-key since they both share their gmax forms (identical)
• other minor additions include gyrados mega (back shiny) and clawitzer (front shiny)