[Documentation] Add bilingual README and MeteorTest contract

[ConnorQi01]

Summary

The repository README should match the MeteorTest documentation style and expose both English and Simplified Chinese versions. The platform contract should also use the current MeteorTest contract filename, meteortest.yml.

Expected Behavior

README.md should be the English primary README, README.zh-CN.md should mirror it in Simplified Chinese, and the platform integration contract should be named meteortest.yml.

Proposed Changes

• Convert README.md to an English primary README.
• Add README.zh-CN.md as the Simplified Chinese mirror.
• Rename test-platform.yml to meteortest.yml.
• Update platform integration docs from TestPlatform/test-platform.yml wording to MeteorTest/meteortest.yml.
• Keep README badges, architecture, quick start, platform integration, and roadmap aligned across both languages.

Validation

• Ran git diff --check.
• Parsed meteortest.yml with PyYAML and confirmed project key and suite count.

[ConnorQi01]

Closed after PR #26 was merged.