Support r# in the module path

[liuchengxu]

scale-info now complains that All path segments should be valid Rust identifiers if a module path contains r#, uncovered in subspace/subspace#330.

A quick solution could be simply ignoring r# in my opinion, not sure whether it has other side effects though.

@@ -97,7 +84,16 @@ impl Path {
     ///
     /// - If the type identifier or module path contain invalid Rust identifiers
     pub fn new(ident: &'static str, module_path: &'static str) -> Path {
-        let mut segments = module_path.split("::").collect::<Vec<_>>();
+        let mut segments = module_path
+            .split("::")
+            .map(|s| {
+                if let Some(stripped) = s.strip_prefix("r#") {
+                    stripped
+                } else {
+                    s
+                }
+            })
+            .collect::<Vec<_>>();

CC @nazar-pc

[ascjones]

Thank you for the bug report. See #149 for a fix

[liuchengxu]

That seems to be cleaner, Thanks for the quick fix!