[tests] Add Myanmar torture tests from Martin Hosken

diff --git a/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/MANIFEST b/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/MANIFEST
index 7f461ee..a2c86e3 100644
--- a/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/MANIFEST
+++ b/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/MANIFEST

@@ -1,2 +1,3 @@
 misc.txt
+torture.txt
 utn11.txt

diff --git a/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/torture.txt b/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/torture.txt
new file mode 100644
index 0000000..faee302
--- /dev/null
+++ b/test/shaping/texts/in-tree/shaper-myanmar/script-myanmar/misc/torture.txt

@@ -0,0 +1,23 @@
+ᨣᩕ᩵ᩣᩴᨣᩕ᩠ᩅᩁ
+ᨣᩕ᩵ᩮ᩠ᨦᨣᩕᩢ᩠ᨯ
+ᩅᩥᨣᩅᩰᩬᩡ
+ᩋᩫᨶ᩠ᨲᩕᩣ᩠ᨿ
+ᨶᩫᨶ᩠ᨲᩕᩧ
+ᩈ᩠ᨾ᩵ᩣᩴᩈ᩠ᨾᩮᩬᩥ
+ᩀᩢ᩠᩵ᨦᨶ᩶ᩣᩴ
+ᩉᩫ᩠ᨯᩉ᩠ᨿᩬᩴ᩶
+ᩅᩥᨱ᩠ᨬᩣ᩠ᨱ
+ᨠᩕᩫ᩠ᨮᩉᩫ᩠ᩅᨷᩫ᩠ᩅ
+ᨷᩴ᩠᩵ᨯᩲ᩶
+ᨷᩴ᩠᩶ᨯᩲ᩵
+ᨺᩮᩥᩢ᩠ᨠ
+ᨡᩧ᩠᩶ᨦ᩻
+ᨸᩢ᩠᩶ᨶ
+ᨵᩥᩢ᩠᩶ᨶ
+ᨷᩣ᩠ᨦ
+ᨷᩤ᩠ᨦ
+ᨻᩮᩬᩧ᩵ᩋᩉᩲ᩶
+ᨾᩨᨤᩕᩢ᩠᩵ᨦ
+ᨴᩣᩴᩋᩁᩲ
+ᩈᩢᨬ᩠ᨬᩣ
+◌ᩲ