Migrated to pnpm, Fixed Dark mode in problem

[SujithThirumalaisamy]

Resolves #58 #55

• [x] Migrated to pnpm
• [x] Fixed Dark mode in Problems
• [x] Fixed Dark mode toggle button
• [x] Fixed Build
• [x] Fixed Turnstile Error in local dev
• [x] Added Persistent volume to DB in local Dev

[siinghd]

@SujithThirumalaisamy maybe a change in turbo.json is required from tasks to pipeline

[SujithThirumalaisamy]

@SujithThirumalaisamy maybe a change in turbo.json is required from tasks to pipeline

Any bounties sir?🫡 @hkirat