Infisical environment variable loading

[Alexnortung]

It would be nice to have infisical environment loading when entering the devenv shell. Just like the dotenv integration loads variables from a .env file, the infisical integration would also load secrets/env variables into the shell.

I have recently made this work with direnv, but I think it would be nicer for me and the team to use with devenv, so that everyone don't have to install infisical on their machine.

In the enterShell we can just add the following

eval $(infisical export --format=dotenv-export --silent)

What do you think?

I can create a PR for it if needed.