[CONTRACT] Implement Branch Contract

[truthixify]

Description:
Create a Soroban contract (branch.rs) to manage branches and their associated assets.

Tasks:

• Create src/branch.rs with:
  • DataKey enum (e.g., Branch(BytesN<32>), AssetList(BytesN<32>)).
  • Branch struct: id, name, location, admin.
  • Functions:
    • create_branch(id, name, location, admin): Registers a new branch.
    • add_asset_to_branch(branch_id, asset_id): Links an asset to a branch.
    • get_branch_assets(branch_id): Retrieves asset IDs for a branch.
• Use errors.rs for errors (e.g., BranchAlreadyExists).
• Enforce admin-only access for branch creation.
• Write tests for branch creation and asset linking.
• Update lib.rs to include branch.rs.

Acceptance Criteria:

• Branches can be created and stored on the Stellar ledger.
• Assets can be linked to branches and retrieved.
• Only the admin can create branches.
• Tests pass for all functions.
• Module compiles and integrates with errors.rs.

[ISTIFANUS-N]

can I work on this?

[gelluisaac]

hi am a software developer and i would love to take on this issue

Recommended by OnlyDust for high-quality and dependable contributions.

[truthixify]

It’s yours @gelluisaac