Upgrade to Expo 48

[saurabbot]

Description

Fixes #157

this pr upgrades expo version to the new expo 48 and have removed expo-cli as expo 48 has expo-cli inbuilt.

Ticket Link

How has this been tested?

Screenshots

Checklist

• [x] Added a "Closes [issue number]" in the ticket link section
• [x] You have not changed whitespace unnecessarily (it makes diffs hard to read)
• [ ] You have commented your code, particularly in hard-to-understand areas
• [x] You have performed a self-review of your own code
• [ ] UI changes: include screenshots of all affected screens

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[saurabbot]

@watadarkstar hey bro could you check this. Damn, jus realised @abdur-rakib is already made a pr for this... well u can go with the better one ..lol ;P