Implement netlify lm:init

[keiko713]

lm:init is the command that everyone who will touch any LFS repo needs to run once per the machine.

It will:

• make sure that the proper version of LFS is installed
• make sure that git lfs install command is run
• download netlify credential helper (https://github.com/netlify/netlify-credential-helper) and install in the path
  • make sure that it supports win/mac/linux
• set netlify credential helper to git global config (git config --global credential.helper netlify-credential-helper)
• make sure that setup finished properly

[keiko713]

@calavera I started doing this last week but this is pretty difficult for me to do. for example:

• some steps are much easier/simple to do with shellscript (e.g. download and install Git LFS and/or credential helper)
• I don't even know how to do things (e.g. download and install credential helper in windows, which folder I should be putting)
• what is the good step for upgrading the credential helper bin

any suggestions for how to make progress with this?

[keiko713]

@calavera we can always rethink the architecture and I'm open for the change, but I was thinking to have two commands init and setup for netlify lm.
init for per laptop and setup for per repo (currently you created lm:setup and put the credential helper installation there).

[calavera]

I've implemented both steps in lm:setup already.

[keiko713]

what do you mean by "both" here? which command will be in charge of creating lm addon and/or setting up .lfsconfig file in the repo?