feat(cli): support adding all components via CLI (#1033)

* feat: support adding all components via CLI

`shadcn-ui add --all`

This was manually tested to work as expected.

* chore: run prettier

* fix(cli): rename to all

* chore: add changeset

---------

Co-authored-by: shadcn <m@shadcn.com>

Author: sramam

.changeset/perfect-walls-dress.md

@@ -0,0 +1,5 @@
+---
+"shadcn-ui": minor
+---
+
+add --all option

packages/cli/src/commands/add.ts

@@ -24,6 +24,7 @@ const addOptionsSchema = z.object({
   yes: z.boolean(),
   overwrite: z.boolean(),
   cwd: z.string(),
+  all: z.boolean(),
   path: z.string().optional(),
 })
 
@@ -38,6 +39,7 @@ export const add = new Command()
     "the working directory. defaults to the current directory.",
     process.cwd()
   )
+  .option("-a, --all", "add all available components", false)
   .option("-p, --path <path>", "the path to add the component to.")
   .action(async (components, opts) => {
     try {
@@ -65,8 +67,10 @@ export const add = new Command()
 
       const registryIndex = await getRegistryIndex()
 
-      let selectedComponents = options.components
-      if (!options.components?.length) {
+      let selectedComponents = options.all
+        ? registryIndex.map((entry) => entry.name)
+        : options.components
+      if (!options.components?.length && !options.all) {
         const { components } = await prompts({
           type: "multiselect",
           name: "components",
@@ -76,6 +80,9 @@ export const add = new Command()
           choices: registryIndex.map((entry) => ({
             title: entry.name,
             value: entry.name,
+            selected: options.all
+              ? true
+              : options.components?.includes(entry.name),
           })),
         })
         selectedComponents = components