feat: implement hackathon team matching contract with comprehensive i…

[akinboyewaSamson]

closes #799

PR Description - Implement Hackathon Team Matching Smart Contract
Overview
This PR implements the Hackathon Team Matching feature as a standalone, test-verified Soroban smart contract crate. It provides the platform's curriculum layer with on-chain functionality for forming teams, matching participants, and verifying developers' skills.

Proposed Changes
Crate Configuration: Created a isolated workspace member crate contracts/hackathon-team-matching to avoid compilation/namespace conflicts with educational templates in the main crate.
Developer Profiles: Allows developers to register on-chain profiles with skills and desired roles.
Team Management: Enables team creation, member capacity control, and team closing triggers.
Collaboration Flows: Implements a complete matching proposal flow:
Join Requests (Developer -> Team) and owner approvals.
Team Invitations (Team -> Developer) and developer acceptances.
Leave and remove member mechanics.
Dynamic Matching Engine: Query functions to retrieve matching teams or developers based on overlapping skills/roles.
Attestation Integration: Links dynamically with the SkillVerificationContract client to check if developers have verified skills on-chain.
Verification & Testing
9 unit and integration tests were added in src/test.rs covering registration, recruitment flows, dynamic matching logic, and external verification. All tests pass successfully:

text
running 9 tests
test test::test_check_skill_verified ... ok
test test::test_double_registration_fails - should panic ... ok
test test::test_initialize_and_registration ... ok
test test::test_create_team ... ok
test test::test_invitation_flow ... ok
test test::test_join_request_team_full - should panic ... ok
test test::test_join_request_flow ... ok
test test::test_leave_and_remove_member ... ok
test test::test_matching_engine ... ok
test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
Compilation target
Verified successful compilation to WebAssembly:

bash
cargo build --package hackathon-team-matching --target wasm32-unknown-unknown --release
Artifact built at: contracts/target/wasm32-unknown-unknown/release/hackathon_team_matching.wasm

[vercel]

@TobyKing007 is attempting to deploy a commit to the Ayomide Adeniran's projects Team on Vercel.

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