Spring-23: Contract - Astar.network

Link: https://astar.network/

Option: EVM Contract
> https://docs.astar.network/docs/build/EVM/

Figma Design (NTS-v2)
> https://www.figma.com/file/g257qMBIsiP80HGhYO559q/NTS-v2_PolkaTicket_v1.0?type=design&node-id=0-1&mode=design&t=P1BKZ0tt7Bz8fsMm-0

**Sub-Tasks**
- [ ] Initial Astar Development Environment
- [ ] HelloWorld with Unit Test
- [ ] Contract-1: Abc
- [ ] Contract-2: Xyz

Start with the linked Astar EVM documentation and the Figma NTS-v2 design. Define the required contract behavior before beginning the listed Initial Astar Development Environment, HelloWorld with Unit Test, Contract-1: Abc, and Contract-2: Xyz subtasks. Done means the environment is working, the HelloWorld unit test passes, and both specified contracts meet the agreed design.

Written by the indexing model from the issue text.