examples: Add assets and conversion scripts for more examples

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

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+grit blueball.png -ftb -fh! -gTFF00FF -gb -gB8 -m!
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.pal *.img ../nitrofiles/sprite
+
+grit nature.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/alpha/nitrofiles/bg/nature.pal

@@ -1,10 +1 @@
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examples/_original_assets/assorted_flowers.txt

@@ -0,0 +1,10 @@
+Link: https://unsplash.com/photos/eHlVZcSrjfg
+Author: Ioann-Mark Kuznietsov
+License: Unsplash
+
+Stryiskyi rynok, Lviv, Ukraine
+Published on March 7, 2017
+Canon, EOS REBEL T1i
+
+I made 2 beautiful photos of tulips one year ago. But uploaded only 1. So, let
+this one be here too.

examples/graphics/bg16bitsload/assets/convert.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+grit bitmap16.jpg -ftb -fh! -gb -gB16
+
+for file in *.bin; do
+    mv -- "$file" "${file%.bin}"
+done
+
+mv *.img ../nitrofiles/bmp

examples/graphics/sprite/assets/convert.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+grit bola.png -ftb -fh! -gTFF00FF -gt -gB8 -m!
+grit personaje.png -ftb -fh! -gTFF00FF -gt -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 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/graphics/spritepal/assets/convert.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+grit bola.png -ftb -fh! -gTFF00FF -gt -gB8 -m!
+grit personaje.png -ftb -fh! -gTFF00FF -gt -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 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