feat: build organization settings page

[SheyeJDev]

Summary

Implemented organization settings management, providing a centralized location for administrators to manage organization details, members, and security preferences.

Changes

Organization Profile

• Added organization profile management section
• Added editable fields for organization information
• Added persistence for profile updates

Member Management

• Added member listing view
• Added member invitation workflow
• Added role management functionality
• Added member removal capability

Security Settings

• Added organization security settings section
• Added MFA enforcement controls
• Added invitation access controls
• Added session management configuration

Architecture

• Added dedicated settings page under app/organization/settings
• Introduced server actions for settings operations
• Added strongly typed organization settings models
• Separated profile, member, and security concerns into reusable components

Acceptance Criteria

• Settings page available
• Updates persisted
• Member management functional

Testing

• Verified organization profile updates persist correctly
• Verified member invitation workflow
• Verified role update functionality
• Verified member removal functionality
• Verified security setting updates persist correctly
• Verified loading and error states

Closes #114