Use configured LSP name wherever possible in --health

[superseed]

I recently got confused when I checked --health rust and saw this:

Configured language servers:
  ✓ rustup: /usr/bin/rustup

It's actually due to having the following in my languages configuration (because I wanted to try out the range formatting features):

[language-server.rust-analyzer]
command = "rustup"
args = ["run", "nightly", "rust-analyzer"]

So --health actually prints the command of the LSP rather than the configured name. I believe it would make more sense to print the name along with the path, so in my case:

Configured language servers:
  ✓ rust-analyzer: /usr/bin/rustup

I also changed the --health "all languages" to have the same behavior and the DAP/formatter output style to match the LSP style (newline, checkmark), for example:

> helix --health swift
Configured language servers:
  ✘ sourcekit-lsp: 'sourcekit-lsp' not found in $PATH
Configured debug adapter: None
Configured formatter:
  ✘ 'swift-format' not found in $PATH
Tree-sitter parser: ✓
Highlight queries: ✓
Textobject queries: ✓
Indent queries: ✘