Add Standard Elliptic Curve Parameter Viewer

## Description:
Implement a tool to display parameters of standard elliptic curves commonly used in cryptography.

## User Story:
As a developer working with ECC, I want to quickly reference standard curve parameters so that I can verify my implementation against known standards.

## Features:
- Display parameters for P-256, P-384, P-521, secp256k1, secp256r1, etc.
- Show curve equation, prime field, generator point, and order
- Search/filter functionality for curves
- Export curve parameters in various formats

Acceptance Criteria:
- [ ] Support at least 10 standard curves
- [ ] Display all essential curve parameters
- [ ] Responsive design for mobile and desktop
- [ ] Export functionality works correctly