feat(#24): implement create_mission logic

[rocknwa]

This PR implements the create_mission function for the QuidStoreContract, fulfilling the requirements of Issue closes #24

Changes included:

• Added create_mission function to initialize a new mission on-chain.

• Verifies the creator’s signature with owner.require_auth().

• Generates a unique mission ID by reading and incrementing MissionCount in instance storage.

• Creates a Mission struct and saves it to persistent storage with DataKey::Mission(id).

• Returns the new mission ID upon successful creation.

• Includes comprehensive tests covering:

  • Successful mission creation
  • Multiple missions creation
  • Empty title / negative reward validations
  • Unlimited participants
  • Zero reward
  • Owner authentication
  • Status initialization
  • Timestamp correctness

Linked Issue: #24

[Kaylahray]

Hi champ @rocknwa. Please pull from main and merge, I added the workflow. run the linting and clippy command too. Thank youu

[rocknwa]

Hi @Kaylahray , thank you.
I’ve pulled and merged the latest main, updated the contract to use the new types.rs and error.rs utilities, and ran cargo fmt and cargo clippy successfully.
Changes are pushed 🚀

[Kaylahray]

Hi @Kaylahray , thank you.
I’ve pulled and merged the latest main, updated the contract to use the new types.rs and error.rs utilities, and ran cargo fmt and cargo clippy successfully.
Changes are pushed 🚀

Hi @rocknwa. Thank you. Kindly run this in quid-contract/ "cargo fmt --all -- --check" then to fix the error run "cargo fmt --all" . Then run "cargo clippy --all-targets --all-features -- -D warnings".

[rocknwa]

Hi, @Kaylahray. Done that and removed stray space before #![cfg(test)]. Commands run successfully.
Thanks!

[Kaylahray]

Hi, @Kaylahray. Done that and removed stray space before #![cfg(test)]. Commands run successfully. Thanks!

Great Job 🥂😊

[rocknwa]

Thanks!
@Kaylahray