Add README files for Admin and UI components

Author: fzaninotto

src/components/admin/Readme.md

@@ -22,12 +22,14 @@ The components in this directory come from [Shadcn Admin Kit](https://marmelab.c
 
 These components are built on top of [TanStack Query](https://tanstack.com/query/latest), [React Hook Form](https://react-hook-form.com/), [React Router](https://reactrouter.com/), [ra-core](https://marmelab.com/ra-core/), [Radix UI](https://www.radix-ui.com/) and [Shadcn UI](https://ui.shadcn.com/).
 
-In Atomic CRM, these components are sometimes slightly modified to fit the look and feel of the application.
-
 ## Documentation
 
 You can find the documentation for these components on the [Shadcn Admin Kit website](https://marmelab.com/shadcn-admin-kit/docs).
 
+## Customization
+
+In Atomic CRM, these components are sometimes slightly modified to fit the look and feel of the application. You can customize them further by editing the source files in this directory.
+
 ## Updates
 
 Shadcn Admin Kit components are actively maintained and updated. To update the components in Atomic CRM, type the following command:

src/components/ui/README.md

@@ -0,0 +1,34 @@
+# UI Components
+
+The components in this directory come from [shadcn/ui](https://ui.shadcn.com/). They are low-level building blocks for creating user interfaces, including:
+
+- Badges
+- Buttons
+- Cards
+- Dialogs
+- Forms Inputs
+- Navigation MMenus
+- Tables
+- Tabs
+- Tooltips
+- And more...
+
+These components are built on top of [Radix UI](https://www.radix-ui.com/) and styled using [Tailwind CSS](https://tailwindcss.com/).
+
+## Documentation
+
+You can find the documentation for these components on the [shadcn/ui website](https://ui.shadcn.com/docs).
+
+## Customization
+
+In Atomic CRM, these components are sometimes slightly modified to fit the look and feel of the application. You can customize them further by editing the source files in this directory.
+
+## Updates
+
+Shadcn/ui components are actively maintained and updated. To add or update a UI component in Atomic CRM, type the following command:
+
+```
+npx shadcn@latest add [component-name]
+```
+
+The admin components have a dependency on some ui components, so if you update the admin components, this will also update the ui components. Check [the admin components readme](../admin/Readme.md) for the command to update them.