Add trophies (#1518)

Author: tokatoka

TROPHIES.md

@@ -0,0 +1,17 @@
+# Bugs found by `libafl` and `libafl_libfuzzer`
+
+* pdf-rs
+    * <https://github.com/pdf-rs/pdf/issues/183>
+    * <https://github.com/pdf-rs/pdf/issues/184>
+    * <https://github.com/pdf-rs/pdf/issues/185>
+    * <https://github.com/pdf-rs/pdf/issues/186>
+    * <https://github.com/pdf-rs/pdf/issues/187>
+    * <https://github.com/pdf-rs/pdf/issues/189>
+* nu-shell
+    * https://github.com/nushell/nushell/issues/10365
+    * https://github.com/nushell/nushell/issues/9417
+* exrs
+    * https://github.com/johannesvollmer/exrs/pull/221
+* pcre2
+    * https://github.com/PCRE2Project/pcre2/issues/275
+