Upgrade to rbx_dom_weak 2.0 (#377)

* Mostly mechanical port bits

* Almost there

* It builds again!

* Turn on all the code again

* Tests compiling but not passing

* Stub work for value resolution

* Implement resolution minus enums and derived properties

* Implement property descriptor resolution

* Update referent snapshots

* Update unions test project

Using a place file instead of a model yields better
error messages in Roblox Studio.

* Add easy shortcut to testing with local rbx-dom

* Update rbx-dom

* Add enum resolution

* Update init.meta.json to use UnresolvedValue

* Expand value resolution support, add test

* Filter SharedString values from web API

* Add 'property' builder method to InstanceSnapshot

* Change InstanceSnapshot/InstanceBuilder boundary

* Fix remove_file crash

* rustfmt

* Update to latest rbx_dom_lua

* Update dependencies, including rbx_dom_weak

* Update to latest rbx-dom

* Update dependencies

* Update rbx-dom, fixing more bugs

* Remove experimental warning on binary place builds

* Remove unused imports

src/serve_session.rs

@@ -10,7 +10,6 @@ use std::{
 use crossbeam_channel::Sender;
 use memofs::IoResultExt;
 use memofs::Vfs;
-use rbx_dom_weak::RbxInstanceProperties;
 use thiserror::Error;
 
 use crate::{
@@ -19,8 +18,8 @@ use crate::{
     project::{Project, ProjectError},
     session_id::SessionId,
     snapshot::{
-        apply_patch_set, compute_patch_set, AppliedPatchSet, InstanceContext,
-        InstancePropertiesWithMeta, PatchSet, RojoTree,
+        apply_patch_set, compute_patch_set, AppliedPatchSet, InstanceContext, InstanceSnapshot,
+        PatchSet, RojoTree,
     },
     snapshot_middleware::snapshot_from_vfs,
 };
@@ -118,14 +117,7 @@ impl ServeSession {
             }
         };
 
-        let mut tree = RojoTree::new(InstancePropertiesWithMeta {
-            properties: RbxInstanceProperties {
-                name: "ROOT".to_owned(),
-                class_name: "Folder".to_owned(),
-                properties: Default::default(),
-            },
-            metadata: Default::default(),
-        });
+        let mut tree = RojoTree::new(InstanceSnapshot::new());
 
         let root_id = tree.get_root_id();