Database plugin - Render blob cells

Summary: As titled. The android plugin was already sending the data in blob cells as `{ type: 'blob' value: string }` (see com/facebook/flipper/plugins/databases/ObjectMapper.java?lines=213-216).

Reviewed By: jknoxville

Differential Revision: D21253129

fbshipit-source-id: 15a44c72f4030887a50faece780c89aa65f6a45b

desktop/app/src/ui/components/table/TypeBasedValueRenderer.tsx

@@ -14,7 +14,7 @@ import React from 'react';
 
 export type Value =
   | {
-      type: 'string';
+      type: 'string' | 'blob';
       value: string;
     }
   | {
@@ -59,6 +59,7 @@ export function renderValue(val: Value) {
           {val.value.toString()}
         </BooleanValue>
       );
+    case 'blob':
     case 'string':
       return <NonWrappingText>{val.value}</NonWrappingText>;
     case 'integer':