Execute Code Cell: Add Codelens

[bolducke]

It would be nice to have codelens similar to the python extension with Jupyter Notebook.

[otobrzo]

Or maybe change background color for active cell, similarly to MATLAB.
In present state, it is hard to see what exactly I will run.

[Petr-Hlavenka]

Also, on my system execute cell does not move cursor to next cell. That would be great to have as well as a shortcut to move to cell up/down with cursor.

[davidanthoff]

Great suggestion, I moved that to a separate issue, because implementing these two is independent.

[brenhinkeller]

+1 for this, and generally anything that can help make code cells more visible/intuitive to beginners!

[RoyiAvital]

I find the cell experience in VS Code interactive mode to be great: microsoft/vscode-jupyter#273.
I wish the Julia VS Code extension would embrace it as it is literally the https://github.com/mwouts/jupytext standard.

This is where the feature you're after comes from, the interactive mode of VS Code.