chore: cleanup repository root structure (#17147)

## Summary

This PR reduces clutter at the repository root to improve navigation on
GitHub. The README is now visible much sooner when browsing the repo.

## Changes

### Deleted from root
- `nx` wrapper script → use `npx nx` instead
- `render.yaml` → no longer used
- `jest.preset.js` → inlined `@nx/jest/preset` directly in each
package's jest.config
- `.prettierrc` → moved config to `package.json`
- `.prettierignore` → patterns already covered by `.gitignore`

### Moved/Consolidated
| From | To |
|------|-----|
| `Makefile` | `packages/twenty-docker/Makefile` (merged) |
| `crowdin-app.yml` | `.github/crowdin-app.yml` |
| `crowdin-docs.yml` | `.github/crowdin-docs.yml` |
| `.vale.ini` | `.github/vale.ini` |
| `tools/eslint-rules/` | `packages/twenty-eslint-rules/` |
| `eslint.config.react.mjs` |
`packages/twenty-front/eslint.config.react.mjs` |

## Result

Root items reduced from ~32 to ~22 (folders + files).

## Files updated

- GitHub workflow files updated to reference new crowdin config paths
- Jest configs updated to use `@nx/jest/preset` directly
- ESLint configs updated with new import paths
- `nx.json` updated with new paths
- `package.json` now includes prettier config and updated workspace
paths
- Dockerfile updated with new eslint-rules path

.github/crowdin-docs.yml

@@ -0,0 +1,44 @@
+#
+# Crowdin CLI configuration for Documentation translations
+# See https://crowdin.github.io/crowdin-cli/configuration for more information
+#
+
+"project_id": 2
+"preserve_hierarchy": true
+"base_url": "https://twenty.api.crowdin.com"
+
+files: [
+  {
+    #
+    # MDX documentation files - user-guide
+    # Using md type to preserve JSX component structure
+    # This prevents Crowdin from reformatting <Warning>, <Accordion>, etc.
+    #
+    "source": "packages/twenty-docs/user-guide/**/*.mdx",
+    "translation": "packages/twenty-docs/l/%two_letters_code%/user-guide/**/%original_file_name%",
+  },
+  {
+    #
+    # MDX documentation files - developers
+    # Using md type to preserve JSX component structure
+    #
+    "source": "packages/twenty-docs/developers/**/*.mdx",
+    "translation": "packages/twenty-docs/l/%two_letters_code%/developers/**/%original_file_name%",
+  },
+  {
+    #
+    # MDX documentation files - twenty-ui
+    # Using md type to preserve JSX component structure
+    #
+    "source": "packages/twenty-docs/twenty-ui/**/*.mdx",
+    "translation": "packages/twenty-docs/l/%two_letters_code%/twenty-ui/**/%original_file_name%",
+  },
+  {
+    #
+    # Navigation labels template - translated into per-locale navigation.json
+    #
+    "source": "packages/twenty-docs/navigation/navigation.template.json",
+    "translation": "packages/twenty-docs/l/%two_letters_code%/navigation.json",
+  }
+]
+