Add project to test that plugin skips unwritable properties

test-projects/script-unwritable/README.md

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+# script-unwritable
+This project is used to test that Rojo successfully builds places with properties that are unwritable to scripts, but are ignored when the same project is used for live sync.

test-projects/script-unwritable/default.project.json

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+{
+	"name": "script-unwritable",
+	"tree": {
+		"$className": "DataModel",
+
+		"HttpService": {
+			"$properties": {
+				"HttpEnabled": true
+			}
+		},
+
+		"StarterPlayer": {
+			"$properties": {
+				"GameSettingsAvatar": "R15"
+			}
+		}
+	}
+}