Move potentially shared vars to separate file

to ensure that they exist when other parts reference them

javascript/_globals.js

@@ -0,0 +1,24 @@
+var CFG = null;
+
+var tagBasePath = "";
+var allTags = [];
+var translations = new Map();
+
+var currentModelHash = "";
+var currentModelName = "";
+
+var wildcardFiles = [];
+var wildcardExtFiles = [];
+var yamlWildcards = [];
+var umiPreviousTags = [];
+var embeddings = [];
+var hypernetworks = [];
+var loras = [];
+var results = [];
+var tagword = "";
+var originalTagword = "";
+var resultCount = 0;
+
+var selectedTag = null;
+var oldSelectedTag = null;
+var previousTags = [];