made a pomodoro timer for my study sessions

[pemsherpa]

Problem

created a pomodoro timer.

Example: "Optimizing study sessions using a proven method for studying."

Example: "Added transform property on hover for consistent UI."

List the main changes in the PR.

• 1. Added time library.
• 2. timer can have 25 to 50 mins.
• 3. adjusted the timings.

[pemsherpa]

@pemsherpa Please Star ⭐️ the repo to earn 'hacktober-accepted' label for the event.