git2codeblock 0.1.0

Turn GitHub and GitLab codesnippet URLs into Markdown codeblocks
Documentation
# git2codeblock
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`git2codeblock` is a crate that converts git URLs into codeblocks. This is mainly for use in one of my Discord bots, but is written to be used anywhere.

## Example

Given the url: [`https://gitlab.com/ewpratten/DeepSpace/-/blob/master/CODEOWNERS#L2`](https://gitlab.com/ewpratten/DeepSpace/-/blob/master/CODEOWNERS#L2), `git2codeblock` will realize that this is GitLab, correctly process the file, and return a Markdown fenced codeblock.

```rust
let url = "https://gitlab.com/ewpratten/DeepSpace/-/blob/master/CODEOWNERS#L2";
let codeblock = git2codeblock::extract_codeblock(url).await.unwrap();
assert_eq!(codeblock, "```\n*       @ewpratten @slownie @johnlownie @LordMichaelmort @awpratten\n```");
```