Create rough solution for handling non-printing characters in results

extensions/ql-vscode/src/view/RawTableValue.tsx

@@ -10,12 +10,28 @@ interface Props {
 
 export default function RawTableValue(props: Props): JSX.Element {
   const v = props.value;
+  const codes: { [key: string]: any } = {
+    '\n': 'U+000A',
+    '\b': 'U+2084',
+    '\0': 'U+0000'
+  };
+
   if (
     typeof v === 'string'
     || typeof v === 'number'
     || typeof v === 'boolean'
   ) {
-    return <span>{v.toString()}</span>;
+    const text = v.toString();
+    const newVal = text.split('');
+    for (let i = 0; i < newVal.length; i++) {
+      for (const char in codes) {
+        if (char === newVal[i]) {
+          newVal[i] = codes[char];
+        }
+      }
+    }
+    const cleanVal = newVal.join('');
+    return <span>{cleanVal}</span>;
   }
 
   return renderLocation(v.url, v.label, props.databaseUri);