VFS in external crate (#297)

* vroom

* Port dir middleware

* Filter rules

* Directory metadata

* Project support

* Enable Lua support

* StringValue support

* CSV

* rbxm, rbxmx, and rbxlx

* JSON models

* Clean up some warnings

* Strip out PathMap

* Unwatch paths when they're reported as removed

* Fix 'rojo upload' behavior

* Upgrade to Insta 0.13.1

* Update dependencies

* Release 0.6.0-alpha.2

* Fix bad merge

* Replace MemoryBackend with InMemoryFs

* Sledgehammer tests into passing for now

* Txt middleware

* Update easy snapshot tests

* Lua tests

* Project middleware tests

* Try to fix test failures by sorting

* Port first set of serve session tests

* Add InMemoryFs::raise_event

* Finish porting serve session tests

* Remove UI code for introspecting VFS for now

* VFS docs

src/web/api.rs

@@ -11,7 +11,6 @@ use rbx_dom_weak::RbxId;
 use crate::{
     serve_session::ServeSession,
     snapshot::{PatchSet, PatchUpdate},
-    vfs::VfsFetcher,
     web::{
         interface::{
             ErrorResponse, Instance, InstanceMetadata as WebInstanceMetadata, InstanceUpdate,
@@ -22,11 +21,11 @@ use crate::{
     },
 };
 
-pub struct ApiService<F> {
-    serve_session: Arc<ServeSession<F>>,
+pub struct ApiService {
+    serve_session: Arc<ServeSession>,
 }
 
-impl<F: VfsFetcher> Service for ApiService<F> {
+impl Service for ApiService {
     type ReqBody = Body;
     type ResBody = Body;
     type Error = hyper::Error;
@@ -53,8 +52,8 @@ impl<F: VfsFetcher> Service for ApiService<F> {
     }
 }
 
-impl<F: VfsFetcher> ApiService<F> {
-    pub fn new(serve_session: Arc<ServeSession<F>>) -> Self {
+impl ApiService {
+    pub fn new(serve_session: Arc<ServeSession>) -> Self {
         ApiService { serve_session }
     }