Global configuration

[ellnix]

When considering things like #20 and various other features #60 we will require to maintain some sort of configuration state.

I made this issue to discuss the interface for it. Assuming that we store it in a toml file to be consistent with the rest of the repo, we will probably have simple key/value strings.

Personally I recommend a git-like syntax:

$ clash config
workspace: not set
editor: not set
$ clash config editor vim
Successfully set editor to vim.
$ clash config
workspace: not set
editor: vim

[Andriamanitra]

The CLI for that would probably be

• clash config show [KEY] (default to printing the entire config file if KEY is not given)
• clash config set <KEY> <VALUE>
• clash config edit (create & open the config.toml file in $EDITOR, not 100% sure if this one is needed)

but to be honest at first stage we just need to have a file, the CLI is easy to add later. Here are the options the config file should contain (eventually, not everything needs to be implemented at once)

• [ ] Clash directory (the one clash fetch uses)
• [ ] #19
• [ ] Customizing colors