Add 1998/schweikh3/try.sh to manifest

I do not know if I completed it properly in manifest.numbers as I'm not
sure if I have th winner_rank value right: I just took it from another
try.sh field.

The path_list.{found,manifest,required}.txt files were also updated.

tmp/path_list.found.txt

@@ -1109,6 +1109,7 @@
 1998/schweikh3/samefile.1.dupe
 1998/schweikh3/schweikh3.c
 1998/schweikh3/schweikh3.orig.c
+1998/schweikh3/try.sh
 1998/tomtorfs/.gitignore
 1998/tomtorfs/.inventory.html
 1998/tomtorfs/Makefile

tmp/path_list.manifest.txt

@@ -1387,6 +1387,7 @@
 1998/schweikh3/samefile.1.dupe
 1998/schweikh3/schweikh3.c
 1998/schweikh3/schweikh3.orig.c
+1998/schweikh3/try.sh
 1998/tomtorfs/.gitignore
 1998/tomtorfs/.inventory.html
 1998/tomtorfs/.winner.json

tmp/path_list.required.txt

@@ -839,6 +839,7 @@
 1998/schweikh3/samefile.1.dupe
 1998/schweikh3/schweikh3.c
 1998/schweikh3/schweikh3.orig.c
+1998/schweikh3/try.sh
 1998/tomtorfs/.gitignore
 1998/tomtorfs/Makefile
 1998/tomtorfs/README.md