Move tools/eslint-rules to packages/twenty-eslint-rules (#17203)

## Summary

Moves the custom ESLint rules from `tools/eslint-rules` to
`packages/twenty-eslint-rules` for better organization within the
monorepo packages structure.

## Changes

- Move `eslint-rules` from `tools/` to `packages/twenty-eslint-rules`
- Use `loadWorkspaceRules` from `@nx/eslint-plugin` to load custom rules
- Update all ESLint configs to use the `twenty/` rule prefix instead of
`@nx/workspace-`
- Update `project.json`, `jest.config.mjs` with new paths
- Update `package.json` workspaces and `nx.json` cache inputs
- Update Dockerfile reference

## Technical Details

The custom ESLint rules are now loaded using Nx's `loadWorkspaceRules`
utility which:
- Handles TypeScript transpilation automatically
- Allows loading workspace rules from any directory
- Provides a cleaner approach than the previous `@nx/workspace-`
convention

## Testing

- Verified all 17 custom ESLint rules load correctly from the new
location
- Verified linting works on dependent packages (twenty-front,
twenty-server, etc.)

packages/twenty-front/src/modules/ui/input/components/__stories__/IconPicker.stories.tsx

@@ -2,7 +2,6 @@ import { type Meta, type StoryObj } from '@storybook/react-vite';
 import { useArgs } from 'storybook/preview-api';
 import { expect, userEvent, within } from 'storybook/test';
 
-import { I18nFrontDecorator } from '~/testing/decorators/I18nFrontDecorator';
 import { IconsProviderDecorator } from '~/testing/decorators/IconsProviderDecorator';
 import { sleep } from '~/utils/sleep';
 
@@ -31,7 +30,7 @@ const Render = (args: RenderProps) => {
 const meta: Meta<typeof IconPicker> = {
   title: 'UI/Input/IconPicker/IconPicker',
   component: IconPicker,
-  decorators: [I18nFrontDecorator, IconsProviderDecorator, ComponentDecorator],
+  decorators: [IconsProviderDecorator, ComponentDecorator],
   render: Render,
 };
 

packages/twenty-front/src/modules/ui/input/components/__stories__/ImageInput.stories.tsx

@@ -1,6 +1,5 @@
 import { type Meta, type StoryObj } from '@storybook/react-vite';
 
-import { I18nFrontDecorator } from '~/testing/decorators/I18nFrontDecorator';
 import { workspaceLogoUrl } from '~/testing/mock-data/users';
 
 import { ImageInput } from '@/ui/input/components/ImageInput';
@@ -9,7 +8,7 @@ import { ComponentDecorator } from 'twenty-ui/testing';
 const meta: Meta<typeof ImageInput> = {
   title: 'UI/Input/ImageInput/ImageInput',
   component: ImageInput,
-  decorators: [ComponentDecorator, I18nFrontDecorator],
+  decorators: [ComponentDecorator],
 };
 
 export default meta;

packages/twenty-front/src/modules/ui/input/editor/components/BlockEditor.tsx

@@ -22,7 +22,7 @@ interface BlockEditorProps {
   readonly?: boolean;
 }
 
-// eslint-disable-next-line @nx/workspace-no-hardcoded-colors
+// eslint-disable-next-line twenty/no-hardcoded-colors
 const StyledEditor = styled.div`
   width: 100%;