feat: refactor theme settings download to pull

Shopify has settled on a convention of using `pull` for commands that
get data from their servers. We see this with the new
`theme metafields pull` command.

I think we should be consist. Therefore, we're changing the comand name.

src/commands/theme/settings/download.ts → src/commands/theme/settings/pull.ts

@@ -4,7 +4,7 @@ import BaseCommand from '@shopify/cli-kit/node/base-command'
 import {themeFlags} from '../../../utilities/shopify/flags.js'
 import {pullThemeSettings} from '../../../utilities/theme.js'
 
-export default class Download extends BaseCommand {
+export default class Pull extends BaseCommand {
   static description = 'Download settings from live theme.'
 
   static flags = {
@@ -33,7 +33,7 @@ export default class Download extends BaseCommand {
   }
 
   async run(): Promise<void> {
-    const {flags} = await this.parse(Download)
+    const {flags} = await this.parse(Pull)
 
     const pullflags = {
       verbose: flags.verbose,