Implement role coefficient definition system

[yu23ki14]

Problem

From issue #336, there's lack of clarity about how role coefficients should be determined:

• No guidelines for how to assign value to different roles
• Difficulty defining abstract roles vs task-based roles
• No clear system for determining role value in relation to others
• No visualization of how roles contribute to overall workspace

Proposed Solution

Create a role coefficient definition system:

• Add UI for workspace creators to assign role coefficients
• Implement default coefficient calculation based on role position in hierarchy
• Create visualization showing relative role importance
• Add documentation explaining role coefficient best practices
• Allow adjustment of coefficients with governance approval

Implementation Details

1. Frontend changes:

   • Add coefficient setting UI in role creation/edit forms
   • Create role visualization showing relative coefficients
   • Add permissions checks for coefficient changes

2. Smart contract changes:

   • Update BigBang.sol to store role coefficients
   • Implement coefficient change governance process

3. Documentation:

   • Create guide for determining appropriate coefficients
   • Add example coefficient setups for different organization types
   • Document how coefficients affect reward distribution

Role Definition Guidelines

• Add UI help text guiding users on how to define roles appropriately
• Provide templates for common role structures
• Create distinction between ongoing roles and task-based roles

Related Issues

Part of issue #336