Preserve case in axis names

[BackThePortal]

In fonts such as Geologica, one of the axis (in that case, sharpness) for some reason requires its name to be written in capitals in the URL.

In Google Fonts, getting a style of Geologica with the sharpness set to 75 returns this URL:

https://fonts.googleapis.com/css2?family=Geologica:SHRP@75&display=swap

However, when using this module with, for example, the following configuration:

families: {
	Geologica: {
		wght: [200, 400],
		SHRP: [75],
		},
	},
},

I get the following error:

 ERROR   (400 Bad Request (https://fonts.googleapis.com/css2?family=Geologica:shrp,wght@0,200;0,400;1,75&display=swap))                                                                                                                                                               nuxt:google-fonts 9:42:20 PM

  at processTicksAndRejections (node:internal/process/task_queues:96:5)
  at async $fetch2 (node_modules/ofetch/dist/shared/ofetch.d438bb6f.mjs:239:15)
  at async Downloader.execute (node_modules/google-fonts-helper/dist/index.mjs:181:24)
  at async setup (node_modules/@nuxtjs/google-fonts/dist/module.mjs:60:9)
  at async normalizedModule (node_modules/@nuxt/kit/dist/index.mjs:2140:17)
  at async installModule (node_modules/@nuxt/kit/dist/index.mjs:2409:95)
  at async initNuxt (node_modules/nuxt/dist/index.mjs:3164:7)
  at async load (node_modules/nuxi/dist/chunks/dev.mjs:204:9)
  at async _applyPromised (node_modules/nuxi/dist/chunks/dev.mjs:96:10)

Note how the 'SHRP' got changed to 'shrp'. These requests are case sensitive, and this change causes the error.

To fix this, capitals need to be preserved when creating the URL.