fix: don't encode url for copy, support route param with regex

[hyoban]

1. don't encode url for copy

https://rss-scraper.deno.dev/feed.xml?url=https%3A%2F%2Freact.dev%2Fblog&itemSelector=a&titleSelector=h2

original      : https://rss-scraper.deno.dev/feed.xml?url=https%3A%2F%2Freact.dev%2Fblog&itemSelector=a&titleSelector=h2
in copy button: https://rss-scraper.deno.dev/feed.xml?url=https%253A%252F%252Freact.dev%252Fblog&itemSelector=a&titleSelector=h2

2. support route param with regex

https://www.npmjs.com/package/eslint-plugin-unused-imports

https://docs.rsshub.app/routes/program-update#npm

/npm/package/:name{(@[a-z0-9-~][a-z0-9-._~]*/)?[a-z0-9-~][a-z0-9-._~]*}