Add 15 death delay to TSD Challenge modes (#753)

* Add 15 death delay to tsd_e

* Add 15 death delay to tsd_h

* Add 15 death delay to tsd_u

parts/modes/tsd_e.lua

@@ -1,6 +1,7 @@
 return{
     env={
         drop=120,lock=1e99,
+        hang=15,
         infHold=true,
         ospin=false,
         eventSet='tsd_e',

parts/modes/tsd_h.lua

@@ -1,6 +1,7 @@
 return{
     env={
         drop=60,lock=60,
+        hang=15,
         freshLimit=15,
         ospin=false,
         eventSet='tsd_h',

parts/modes/tsd_u.lua

@@ -1,6 +1,7 @@
 return{
     env={
         drop=60,lock=60,
+        hang=15,
         freshLimit=15,
         ospin=false,
         eventSet='tsd_u',