Support filtering of perspectives

This enables filtering to include the perspective as part of the filter.
In essence, the change is that the filter regex now runs over the full
column name (including perspective and module) rather than just the
name.

src/inspect/mod.rs

@@ -124,12 +124,11 @@ impl ModuleView {
             .iter()
             .enumerate()
             .filter_map(|(i, (_, handle))| {
-                if self.regexps.is_empty()
-                    || self
-                        .regexps
+                if self.regexps.is_empty() || {
+                    self.regexps
                         .iter()
-                        .any(|regex| regex.is_match(&handle.name))
-                {
+                        .any(|regex| regex.is_match(&handle.to_string()))
+                } {
                     Some(i)
                 } else {
                     None