[USE] Add Kharoshti test data from Unicode proposal

test/shaping/texts/in-tree/MANIFEST

@@ -7,3 +7,4 @@ shaper-myanmar
 shaper-sea
 shaper-thai
 shaper-tibetan
+shaper-use

test/shaping/texts/in-tree/shaper-use/MANIFEST

+script-kharoshti

test/shaping/texts/in-tree/shaper-use/script-kharoshti/MANIFEST

+misc.txt

test/shaping/texts/in-tree/shaper-use/script-kharoshti/misc.txt

+10a24 10a2a 10a0c 10a2a 10a3f 10a17 10a38 10a05 10a0c 10a0f
+10a00 10a01
+10a10 10a01
+10a20 10a01
+10a00 10a02
+10a31 10a02
+10a28 10a02
+10a00 10a03
+10a28 10a03
+10a00 10a05
+10a10 10a05
+10a20 10a05
+10a21 10a05
+10a00 10a06
+10a24 10a06
+10a28 10a0c
+10a2f 10a0d
+10a00 10a0e
+10a10 10a0f
+10a17 10a38
+10a12 10a39
+10a28 10a3a
+10a22 10a01 10a10 10a3f
+10a10 10a3f 10a2e
+10a28 10a3f 10a2a
+10a2c 10a3f 10a31
+10a2f 10a3f 10a1f
+10a2f 10a3f 10a29
+10a2a 10a3f 10a1f
+10a1f 10a3f 10a2a
+10a2b 10a3f 10a24
+10a24 10a3f 10a2b
+10a10 10a3f 10a2b
+10a1f 10a3f 10a2c
+10a10 10a3f 10a1f
+10a11 10a3f 10a10 10a3f 10a2e