Add support for Power Query M Formula Language

[Trace-Elements0]

It would be very helpful in the development and testing of Power Query (M) code for Power BI and Excel.

I'd like for the Power Query (M) Formula language to become a supported language by Polyglot notebooks. Ideally the notebook could run bits of M code and display the results.

Code Samples

Create a table by inferring the number of columns from the first row.

Usage

let 
    Source = #table(
        null,
        {
            {"Betty", 90.3},
             {"Carl", 89.5}
        }
    )
in
    Source

Output

#table(
    {"Column1", "Column2"}, 
    {
        {"Betty", 90.3}, 
        {"Carl", 89.5}
    }
)

Polyglot Notebook Result

Column1	Column2
Betty	90.3
Carl	89.5

Creating a table then adding a column

Usage

let
    Source = #table({}, {})
in
    Source 

Output

#table({}, {})

Polyglot Notebook Result

Column1	Column2

The Power Query SDK Visual Studio Code extension makes it possible to execute PQ(M) code, but it doesn't have the portability and markdown support that notebooks do. Being able to walk people through how you came to a solution would be very helpful.