Enable inter-organization collaboration through alliance system and cross-bank transfers

[gmartincor]

Summary

This PR introduces a comprehensive inter-organization collaboration system that enables TimeOverflow organizations to form alliances and facilitate both direct organization-to-organization transfers and cross-bank member-to-member transfers between allied organizations. The implementation provides alliance management, cross-bank transfer capabilities, contact functionality between organizations, and post visibility options.

Key Features

1. Organization Alliance System

• Alliance Management: Organizations can send, accept, or reject alliance requests
• Status Tracking: Three-state alliance system (pending, accepted, rejected)
• Administrative Control: Only organization administrators can manage alliances
• Self-Alliance Prevention: Built-in validation prevents organizations from allying with themselves

2. Cross-Bank Transfer System

• Organization-to-Organization Transfers: Direct time transfers between allied organizations through dedicated interface
• Member-to-Member Cross-Bank Transfers: Members can transfer time to members of allied organizations for specific posts/services
• Alliance Validation: All cross-bank transfers require active alliances between organizations
• Multi-Step Processing: Automated handling of transfers involving user accounts, organization accounts, and destination accounts

3. Cross-Bank Post Interactions

• Contact Request System: Secure communication between members of different organizations
• Email Notifications: Automated contact request delivery with member information
• Privacy Protection: Contact details hidden until explicit request is made

4. Organization Filtering

• Multi-Organization Views: Filter offers/inquiries across allied organizations
• Dynamic JavaScript Filtering: Client-side filter management preserving search state