UPPCL-P2P: Onboarding NP's to Sandbox Env

### Description:
Onboarding the following network participants (NPs) to the UPPCL-P2P sandbox environment:
- ISGF
- MVVNL
- UPPCL
- Trillectric
- Powerledger

**(Note: This is yet to finalized.)**

### Goals:
- [ ] Successfully onboard ISGF, MVVNL, UPPCL, Trillectric, and Powerledger to the UPPCL-P2P sandbox environment.

### Expected Outcome:
- All listed NPs are onboarded and integrated into the sandbox environment.

### Acceptance Criteria:
- [ ] Confirmation that each NP has been onboarded to the sandbox environment.
- [ ] Successful integration and testing of each NP in the sandbox environment.

### Mockups / Wireframes:
NA

### Product Name:
UPPCL-P2P

### Domain:
Power Sector

### Tech Skills Needed:
Sandbox Integration, Onboarding Process

### Complexity:
Medium

### Category:
Sandbox Onboarding

### Sub Category:
NP Integration

No files, tests, or entry points are identified. First clarify and finalize the onboarding process and sandbox requirements for ISGF, MVVNL, UPPCL, Trillectric, and Powerledger. Done means each participant is confirmed onboarded, integrated, and successfully tested in the UPPCL-P2P sandbox.

Written by the indexing model from the issue text.