Make user config the default config

[okmanideep]

Is your feature request related to a problem? Please describe.
Currently having to pass -c user every time. Also for some reason freeze -c user is slower compared to freeze (Checked with ls | freeze)

Describe the solution you'd like
Make $XDG_CONFIG/freeze/user.json the default config when no config is passed

Describe alternatives you've considered
NA

Additional context
MacOS 14.4.1 (23E224), installed via brew install charmbracelet/tap/freeze

[AlejandroSuero]

@okmanideep when testing out the changes for #107 I realised that even when using freeze -c full still takes a lot of time but if you output it to .svg it will create it instantly both with -c user or -c full.

My assumption here is that to encode the .png image, takes a lot of time if is not the base config.

I logged out the time between getting the config and parsing the json, here are the results:

• Using -c full:

image from command

• Using -c user:

image from command

my user.json

{
  "background": "#171717",
  "margin": [
    0,
    0,
    0,
    0
  ],
  "padding": [
    0,
    0,
    0,
    0
  ],
  "window": false,
  "title": {
    "title": "auto",
    "position": "center"
  },
  "width": 0,
  "height": 0,
  "config": "default",
  "theme": "dracula",
  "wrap": 0,
  "border": {
    "radius": 0,
    "width": 0,
    "color": "#515151"
  },
  "shadow": {
    "blur": 0,
    "x": 0,
    "y": 0
  },
  "font": {
    "family": "JetBrains Mono",
    "file": "",
    "size": 14,
    "ligatures": true
  },
  "line_height": 1.2,
  "show_line_numbers": false
}

[AlejandroSuero]

Additionally if you want the conversion to be faster, consider downloading librsvg, this makes it drop from 31.4s to 1.3s.

On MacOS you can use brew install librsvg.