Make HirFileId, EditionedFileId and macro files Salsa struct

And make more queries non-interned.

Also flip the default for queries, now the default is to not intern and to intern a query you need to say `invoke_interned`.

crates/query-group-macro/tests/multiple_dbs.rs

@@ -6,11 +6,13 @@ pub trait DatabaseOne: salsa::Database {
     fn input_string(&self) -> String;
 
     // unadorned query
+    #[salsa::invoke_interned(length)]
     fn length(&self, key: ()) -> usize;
 }
 
 #[query_group]
 pub trait DatabaseTwo: DatabaseOne {
+    #[salsa::invoke_interned(second_length)]
     fn second_length(&self, key: ()) -> usize;
 }