Feature/implement history tab

[DemaPy]

Goal: Provide preview of user typing progress

Note

It also opens the door to filtering, sorting, and searching features.

• Create reusable UI tabs component with Bootstrap styling and event handling
• Add HistoryEntry type and related interfaces to types.ts
• Implement localStorage service for managing history entries (max 100)
• Build history view component with cards showing CPM, ACC, snippet info, and mini charts
• Update index.ts and index.html to integrate tab navigation and history saving

[DemaPy]

@Markonis pls check and tell me what you think :)