Add popup UI logic

[abozanona]

Every time the user opens the popup, display the popup content based on the status read from the current opened page.

List of possible status received from the content page:

Code	What is content status	What should show in popup
null/undefined/nothing	This is the default status code. It will return in cases when the content script is not loaded on page or the page doesn't support loading content script.	A message indicating that the script is not loaded. Please make sure that the page is valid and to refresh the page if it is a valid page.
WAITING_CREATE_ROOM	When the content script is loaded successfully but no video was selected by user and no room was created	Show two options to either create a new room or join a room. If the users creates a new room show him a message to select a video from page. If the user Selects a video from page, show him a screen with the party details and the ability to share party link.
WAITING_SELECT_VIDEO	Socket is opened but the user didn't select any video	show the user a message asking him to select a video from page. If the user Selects a video from page, show him a screen with the party details and the ability to share party link.
PARTY_SETUP_COMPLETED	Video is selected and socket is connected to party.	show user a screen with the party details wiith the ability to share party link.