Support interactive mode

[mingrammer]

I'll support interactive mode for improving the user experience

When you create a new memo ...

1. Open the prompt for receiving the user's input (on a temp file)
2. There are three types of prompt
   1. Title
   2. Content
   3. Tag (each tag is separated by comma)
3. Can either save or cancel
   1. An user can edit the specific memo with same way

Also, user can search the memo by title or content interactively

1. I'll add new command "search" for searching a specific memo
2. gomo search will open an one line prompt for querying the search text
   1. Surely, gomo search [some text] is also possible. It will return a list directly to terminal
3. The list below prompt being changed according to search text in realtime
   1. An user can delete a searched memo on additional [yes | no] prompt with specific key-binding
      1. This will applied to gomo list too