chore(uploads): Reorganise, change uploads package to storage

[dac09]

This PR does the following:

• renames @redwoodjs/uploads -> @redwoodjs/storage
• Renames processors -> savers

They now look like this:

  // reads much nicer ✅
  const processedInput = await saveFiles.forProfile(input)

  // avatar is a File becomes a string
  // processedInput.avatar =
  // '/basePath/uploads/profile-avatar-01J6ACDPWAER8B1SAXPKQK5YA1.png'

  const profile = await db.profile.update({
    data: processedInput,
    where: { id },
  })

even though when you export it, it looks weird

// api/src/lib/uploads.ts
const { saveFiles, storagePrismaExtension } = setupStorage({
  uploadsConfig,
  storageAdapter: fsStorage,
  urlSigner,
})

export { saveFiles, storagePrismaExtension }

The naming convention is:
for<Model> - takes inputs in the shape of a Prisma data for that model but with Files instead of strings. The files get saved to storage, and a key/path is replaced in the value.

inList - does the same, but only takes an array of File, and returns an array of stored paths/keys