Move assets dir to root, fix debug not finding assets

.cargo/config.toml

@@ -0,0 +1,3 @@
+[env]
+# Makes Bevy look for the assets/ directory in the right place.
+BEVY_ASSET_ROOT = { value = ".", relative = true }

.vscode/launch.json

@@ -9,7 +9,10 @@
                 "args": [ "build", "--bin=gaemstone-client", "--package=gaemstone-client" ],
                 "filter": { "name": "gaemstone-client", "kind": "bin" },
             },
-			"cwd": "${workspaceFolder}",
+            // When Bevy looks for assets, it checks BEVY_ASSET_ROOT, CARGO_MANIFEST_DIR, and
+            // then falls back to the executable directory. When debugging, the cargo manifest
+            // directory is not set, so we need to specify this environment variable.
+            "env": { "BEVY_ASSET_ROOT": "${workspaceFolder}" },
             "args": [],
         },
         {
@@ -20,7 +23,6 @@
                 "args": [ "build", "--bin=gaemstone-server", "--package=gaemstone-server" ],
                 "filter": { "name": "gaemstone-server", "kind": "bin" },
             },
-			"cwd": "${workspaceFolder}",
             "args": [],
         }
     ]