feat: add CLI command to open Sanity Learn (#7409)

packages/@sanity/cli/src/commands/index.ts

@@ -5,6 +5,7 @@ import docsCommand from './docs/docsCommand'
 import helpCommand from './help/helpCommand'
 import initCommand from './init/initCommand'
 import installCommand from './install/installCommand'
+import learnCommand from './learn/learnCommand'
 import loginCommand from './login/loginCommand'
 import logoutCommand from './logout/logoutCommand'
 import manageCommand from './manage/manageCommand'
@@ -31,6 +32,7 @@ export const baseCommands: (CliCommandDefinition | CliCommandGroupDefinition)[]
   debugCommand,
   helpCommand,
   projectsGroup,
+  learnCommand,
   listProjectsCommand,
   codemodCommand,
   telemetryGroup,

packages/@sanity/cli/src/commands/learn/learnCommand.ts

@@ -0,0 +1,20 @@
+import open from 'open'
+
+import {type CliCommandDefinition} from '../../types'
+
+const learnCommand: CliCommandDefinition = {
+  name: 'learn',
+  helpText: '',
+  signature: 'learn',
+  description: 'Opens Sanity Learn in your web browser',
+  async action(args, context) {
+    const {output} = context
+    const {print} = output
+    const url = 'https://www.sanity.io/learn'
+
+    print(`Opening ${url}`)
+    await open(url)
+  },
+}
+
+export default learnCommand