[CI][FRONT] Storybook tests sharding (#9448)

# Introduction
The idea here is to improve perf nor fluidity of both storybook build
and tests execution duration.

## Levers:
- Storybook tests
[shards](https://storybook.js.org/docs/writing-tests/test-runner)
- Refactored storybook's build caching using `actions/cache/restore` and
`actions/cache/save` to avoid useless computation with we wanna just
write or retrieve it
- Running storybook build with --test
[flag](https://storybook.js.org/docs/api/main-config/main-config-build)
( please note that we only disable docs addons in order to keep coverage
up and running )

closes https://github.com/twentyhq/core-team-issues/issues/49

packages/twenty-front/.storybook/main.ts

@@ -31,6 +31,14 @@ const computeStoriesGlob = () => {
 const config: StorybookConfig = {
   stories: computeStoriesGlob(),
   staticDirs: ['../public'],
+  build: {
+    test: {
+      disabledAddons: [
+        '@storybook/addon-docs',
+        '@storybook/addon-essentials/docs',
+      ],
+    }
+  },
   addons: [
     '@storybook/addon-links',
     '@storybook/addon-essentials',