chore(angular): add README in each stories part

In order to try to keep the examples clean

examples/angular-cli/.storybook/preview.ts

@@ -24,7 +24,7 @@ addParameters({
   },
   options: {
     storySort: {
-      order: ['Welcome'],
+      order: ['Welcome', 'Core ', 'Addons ', 'Basics '],
     },
   },
 });

examples/angular-cli/src/stories/addons/README.stories.mdx

@@ -0,0 +1,7 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
+<Meta title="Addons / Readme" />
+
+# Examples for Storybook addons
+
+These examples can be used to check the correct operation of addons requiring a particular configuration for angular

examples/angular-cli/src/stories/basics/README.stories.mdx

@@ -0,0 +1,7 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
+<Meta title="Basics / Readme" />
+
+# Examples for Angular features
+
+These examples serve to highlight the right Storybook operation for basics Angular features

examples/angular-cli/src/stories/core/README.stories.mdx

@@ -0,0 +1,7 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
+<Meta title="Core / Readme" />
+
+# Examples for Storybook native features
+
+These examples highlight Storybook's native functionality. It does not require any special addon

examples/angular-cli/src/stories/core/parameters/__snapshots__/all-parameters.stories.storyshot

@@ -18,7 +18,10 @@ exports[`Storyshots Core / Parameters / All parameters All parameters passed to
     "options": {
       "storySort": {
         "order": [
-          "Welcome"
+          "Welcome",
+          "Core ",
+          "Addons ",
+          "Basics "
         ]
       }
     },

examples/angular-cli/src/stories/legacy/README.stories.mdx

@@ -0,0 +1,7 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
+<Meta title="Legacy / Readme" />
+
+# Legacy examples
+
+Example of sotry still supported by storybook but no longer recommended or deprecated