Code Review

This pull request restructures the VS Code extension by modularizing network requests and translation utilities into dedicated files under a new tools directory, introducing a new contest registration feature (SignUpContest.ts), and adding a project specification document (docs/Standard.md). The feedback highlights critical improvements: resolving relative redirect URLs to absolute paths in the fetch utility, adding a Content-Length header to POST requests to prevent potential 411 errors, and parallelizing translation requests with Promise.all to boost performance. Additionally, the registration success detection should be made more robust against redirects, and several instances of the PascalCase variable Rated should be renamed to camelCase (supportsRated) to comply with the newly established project guidelines.