Add the clippy/rust verison of lint introduced to the website

[xFrednet]

It might be useful to include the Rust and Clippy version that a lint was introduces on the lint list. This feature is useful for two reasons:

1. It can happen that users pinned the compiler version for a project. (I believe that this is more common in other languages as Rust has a high compatibility grantee). It might than be interesting to know if a lint is already available for the compiler version they are using.
2. The current README links to the lint list of master this already includes lints that are not included in the current stable rust version. Displaying the introduction version could reduce confusion

The versions should in my opinion be a part of the lint data (lints.json) for the website as loading the version dynamically would take up unnecessary performance.

@rustbot label +L-website, +C-needs-discussion

[xFrednet]

@rustbot claim