Function convert_html_str_to_adf_str 

pub fn convert_html_str_to_adf_str(html: String) -> String

The main procedure for our ADF Builder. Allows us to take an HTML string and turn it into a valid ADF string.

use htmltoadf::convert_html_str_to_adf_str;
use serde_json::json;

let converted = convert_html_str_to_adf_str("<h1>Hello World</h1>".to_string());
let expected = json!({
    "version": 1,
    "type": "doc",
    "content": [
        {
            "type": "heading",
            "attrs": {
                "level": 1
            },
            "content": [
                {
                    "type": "text",
                    "text": "Hello World"
                }
            ]
        }
    ]
}).to_string();
assert_eq!(expected, converted);