CLI QoL Additions for First-Time Users

[uetuluk]

I believe the Command Line Interface can use some Quality of Life additions to make it easier for first-time users to use TVM.

1. tvm install tutor or tvm install latest
   A command similar nvm install node that installs the latest version of tutor without requiring the user to check the list of available versions first.

2. tvm project start
   A wrapper for the source .tvm/bin/activate command to make it easier to remember.

3. tvm project quickstart
   Runs the following commands in sequence.

tvm install tutor
tvm project init
tvm project start
tvm config save .
tutor config save --interactive