add support for .db extension

Author: dinitri

src/android/UploadTask.java

@@ -329,7 +329,7 @@ private Request createRequest() throws FileNotFoundException {
         // Build file reader
         String extension = MimeTypeMap.getFileExtensionFromUrl(filepath);
         MediaType mediaType;
-        if (extension.equals("json")) {
+        if (extension.equals("json") || extension.equals("json")) {
             // Does not support devices less than Android 10 (Stop Execution)
             // https://stackoverflow.com/questions/44667125/getmimetypefromextension-returns-null-when-i-pass-json-as-extension
             mediaType = MediaType.parse(MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension) + "; charset=utf-8");