feat: added excercise for option

info.toml

@@ -701,4 +701,18 @@ path = "exercises/conversions/from_str.rs"
 mode = "test"
 hint = """
 If you've already solved try_from_into.rs, then this is almost a copy-paste.
-Otherwise, go ahead and solve try_from_into.rs first."""
+Otherwise, go ahead and solve try_from_into.rs first."""
+
+[[exercises]]
+name = "option1"
+path = "exercises/option/option1.rs"
+mode = "compile"
+hint = """
+Check out some functions of Option:
+is_some
+is_none
+unwrap
+
+and:
+pattern matching
+"""