[cuecfg] add toml support

[savil]

Summary

We need this to parse Cargo.toml files.

I chose this library: github.com/pelletier/go-toml.

• The alternative is https://github.com/BurntSushi/toml. This one has more github stars than go-toml.
• go-toml's interface is more similar to encoding/json, and is also used by viper.

Also, changed v to value in cuecfg.go to address linter complaint.

How was it tested?

go test ./cuecfg/...

[savil]

Current dependencies on/for this PR:

• main
  • PR [cuecfg] add toml support #92 👈
    • PR [Rust Planner] part 1: devbox shell #97
      • PR [Rust Planner] part 2: devbox build #104

This comment was auto-generated by Graphite.

[savil]

Current dependencies on/for this PR:

• main
  • PR [cuecfg] add toml support #92 👈

This comment was auto-generated by Graphite.

[savil]

I made this public (uppercase M in MarshalToml) to be consistent with the json and yaml versions.

IMO these should be private in the cuecfg package's interface. If folks agree, then I can send another PR to make them private.

[savil]

oops, this is copy-pasta from json.go. I'll remove this comment.

[loreto]

LGTM

You have the right library, because we're already using it in python_poetry_planner.go

[loreto]

I find heredoc.Doc handy for these cases

[savil]

ah, I like that

sadly, because of gofmt it ends up like this:

var testTomlStr = heredoc.Doc( `Version = 2 Name = 'go-toml' [Meta] Tags = ['go', 'toml'] `, ) 

[savil]

which isn't much better IMO 🤷🏾 😭

[loreto]

Are you sure?

Have you tried:

var testTomlStr = heredoc.Doc(` Version = 2 Name = 'go-toml' [Meta] Tags = ['go', 'toml'] `) 

(notice placement of the backticks)