feat(query): package changes reason (#9240)

### Description

Plumbing through reason for why a package changed for query. Adds a
`reason` field which is a union of the different reasons a package could
be added.

This can be reviewed commit by commit, although there is a little bit of
churn around types and some behavior.

### Testing Instructions

Added some tests to `affected.t`

crates/turborepo-lib/src/lib.rs

@@ -21,7 +21,6 @@ mod engine;
 
 mod framework;
 mod gitignore;
-mod global_deps_package_change_mapper;
 pub(crate) mod globwatcher;
 mod hash;
 mod opts;

crates/turborepo-lib/src/package_changes_watcher.rs

@@ -370,7 +370,9 @@ impl Subscriber {
                             }
                         }
                     }
-                    Ok(PackageChanges::Some(mut filtered_pkgs)) => {
+                    Ok(PackageChanges::Some(filtered_pkgs)) => {
+                        let mut filtered_pkgs: HashSet<WorkspacePackage> =
+                            filtered_pkgs.into_keys().collect();
                         // If the root package has changed, we only send it if we have root
                         // tasks. Otherwise it's not worth sending as it will only
                         // pollute up the output logs