Merge #10796

10796: ide: display static values in hover r=Veykril a=jhgg

Continuation from #10785 - does the same thing, but for `static`'s as well.

Co-authored-by: Jake Heinz <jh@discordapp.com>

crates/hir/src/lib.rs

@@ -1497,6 +1497,10 @@ impl Static {
         db.static_data(self.id).mutable
     }
 
+    pub fn value(self, db: &dyn HirDatabase) -> Option<ast::Expr> {
+        self.source(db)?.value.body()
+    }
+
     pub fn ty(self, db: &dyn HirDatabase) -> Type {
         let data = db.static_data(self.id);
         let resolver = self.id.resolver(db.upcast());