Add default overridable config for running solutions in particular language

[ellnix]

It would be great if there was a lookup table with language names and the build & run commands that the tool automatically searches for. Some ideas:

# changes the default language to C
clash language c

clash run 
# runs `sol.{language_file_ext}` with default language

clash run --language rust
clash run -l rust
# runs sol.rs with rust

Ideally there would be a config file in $XDG_CONFIG_HOME/clash for Linux and %Appdata%/whatever for Windows like:

# languages.yml
ruby:
  run: ruby sol.rb
c:
  build: gcc sol.c
  run: ./sol
rust:
  run: cargo run --release
  workspace: rust
  code_origin: sol.rs
  code_destination: src/main.rs

- workspaces/
  - rust/
    - src/
    - Cargo.toml

The workspace feature would allow for supporting non standard libraries in languages like Rust. The workflow would be:

• Edit sol.rs
• clash run
  • cp {config['rust']['code_origin']} CONFIG_FOLDER/workspaces/{config['rust']['workspace']}/{config['rust']['code_destination']}, i. e. cp sol.rs CONFIG_FOLDER/workspaces/rust/src/main.rs
  • {config['rust']['run']}, i. e. cargo run --release
  • Evaluate solution