examples: Add assets and scripts for 3D sprites examples

examples/3dsprites/animation/assets/convert.sh

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+#!/bin/sh
+
+grit numbers.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit nfl.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg

examples/3dsprites/basic/assets/convert.sh

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+#!/bin/sh
+
+grit blueball.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+grit redcar.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit nfl.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg

examples/3dsprites/rotscale/assets/convert.sh

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+#!/bin/sh
+
+grit blueball.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+grit redcar.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg

examples/3dsprites/setlayer/assets/convert.sh

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+#!/bin/sh
+
+grit numbers.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit nfl.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+grit bg1.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+grit bg2.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg

examples/3dsprites/setpriority/assets/convert.sh

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+#!/bin/sh
+
+grit blueball.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+grit redcar.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg

examples/3dsprites/swappriority/assets/convert.sh

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+#!/bin/sh
+
+grit blueball.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+grit redcar.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit bg3.png -ftb -fh! -gTFF00FF -gt -gB8 -mR8 -mLs
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img *.map ../nitrofiles/bg