add vscode remote dev container support

[prnam]

Adds VS Code remote dev container support for those developers who use VS Code and containers for development.

• It is configures to create container with Nodejs 18 LTS & Python 3.11
• Post creation of the container it executes the essential commands in environment setup and build it, thus enabling quick and easy way to get everything setup for new contributors without context switching.

[squidfunk]

Thanks for the PR! Honestly, I'm not feeling comfortable maintaining this, because none of us maintainers uses dev containers. Are you up for maintaining this configuration for the time to come? If so, we can merge it. Additionally, could you please clean up the source files? There are a lot of commented out lines that seem very generic.

[prnam]

I can maintain it.

Comments are removed, @squidfunk.

[squidfunk]

Thanks! Yes, let's remove them. Folks who are using dev containers should consult the dev containers documentation, as commented-out is not executed and thus just rots ☺️ LGTM!