Auto merge of #10342 - mitsuhiko:feature/question-mark-used, r=Alexendoo

Add question-mark-used lint

This lint complains when the question mark operator (try operator) is used.  This is a restriction lint that can be useful on local scopes where a custom error handling macro is supposed to be used to augment the error based on local scope data before returning.

Fixes #10340

---

changelog: New lint [`question_mark_used`]
[#10342](https://github.com/rust-lang/rust-clippy/pull/10342)
<!-- changelog_checked -->

tests/ui/question_mark_used.rs

@@ -0,0 +1,15 @@
+// non rustfixable
+#![allow(unreachable_code)]
+#![allow(dead_code)]
+#![warn(clippy::question_mark_used)]
+
+fn other_function() -> Option<i32> {
+    Some(32)
+}
+
+fn my_function() -> Option<i32> {
+    other_function()?;
+    None
+}
+
+fn main() {}

tests/ui/question_mark_used.stderr

@@ -0,0 +1,11 @@
+error: question mark operator was used
+  --> $DIR/question_mark_used.rs:11:5
+   |
+LL |     other_function()?;
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider using a custom macro or match expression
+   = note: `-D clippy::question-mark-used` implied by `-D warnings`
+
+error: aborting due to previous error
+