Templates repository

[EricSimon]

It will be cool,to add a remote repository for templates (like docker imageor sdkman for templates).
Features will be :

• support default public template repository and private repository (local configuration)
• generate from repository
  example for public repository (with pimo and mimo templates)

ep --template pimo --template mimo < context.yml
ep -t pimo -t mimo < context.yml

example for private repository

ep --template aliasRepo/myTemplateo < context.yml
ep -t aliasRepo/myTemplate < context.yml

• list templates (with filter)
  example

ep --list
- mimo (default)
- pimo (default)
- myTemplate (aliasRepo)

ep --list mo
- mimo (default)
- pimo (default)

Configuration of private repository should be made from FS (~/.ep) or env, and secret must be declared in secret store