Feat: profile page for logged in user

[xmliszt]

• [x] Profile page
• [x] View past 5 game results
• [x] toggle anonymity for nickname display on rank in /levels
• [x] /levels toggle to show ranks
• [x] Able to delete account completely

---

Basically, profile can be separated into the following sections

Section 01 - Profile details, information

• nickname (editable)
• best performing topic (topic with highest score)
• most frequently played topic
• # of games played
• # of topics played

Section 02 - Past 5 Game Results Display

• Showcase of past 5 game (in form of card?), clicking each should direct to the results page

Section 03 - Flashcard for learning and revision (Will do this in a new feature in issue)

• Collect all the words the players have played so far.
• Hook with urban dictionary API to display vocab definition and other basic info
• User should be able to select words (3 - 5 per batch) to play a custom round of game with those words. Those games should be recorded as per normal as well, because this is the user's attempt to get better scores with better clues written.
• User should be able to organise the words played into custom-made Vocab Book (this can be future paid content for how many Vocab Book can user create)

Section 04 - Dangerous Zone - Delete Account

• show double confirmation to confirm if user want to delete
• use destructive variant to show dangerous sense
• delete account logic hook with firebase to completely remove everything in the db with this user (just delete the entire 'user' document in the 'users' collection

[xmliszt]

Issues implementing partial features: #225 #213 #214 Implemented by #217 #227 #229