chore: extend root eslint config in twenty-server (#5101)

Reopening @thaisguigon work from
https://github.com/twentyhq/twenty/pull/4781

---------

Co-authored-by: Thaïs Guigon <guigon.thais@gmail.com>

packages/twenty-server/.eslintrc.cjs

@@ -0,0 +1,91 @@
+module.exports = {
+  plugins: ['@stylistic'],
+  extends: ['../../.eslintrc.cjs'],
+  ignorePatterns: ['src/engine/workspace-manager/demo-objects-prefill-data/**'],
+  overrides: [
+    {
+      files: ['*.ts'],
+      parserOptions: {
+        project: ['packages/twenty-server/tsconfig.json'],
+      },
+      rules: {
+        'no-restricted-imports': [
+          'error',
+          {
+            patterns: [
+              {
+                group: ['**../'],
+                message: 'Relative imports are not allowed.',
+              },
+            ],
+          },
+        ],
+
+        '@stylistic/linebreak-style': ['error', 'unix'],
+        '@stylistic/lines-between-class-members': [
+          'error',
+          {
+            enforce: [{ blankLine: 'always', prev: 'method', next: 'method' }],
+          },
+        ],
+        '@stylistic/padding-line-between-statements': [
+          'error',
+          { blankLine: 'always', prev: '*', next: 'return' },
+          { blankLine: 'always', prev: ['const', 'let', 'var'], next: '*' },
+          {
+            blankLine: 'any',
+            prev: ['const', 'let', 'var'],
+            next: ['const', 'let', 'var'],
+          },
+          { blankLine: 'always', prev: '*', next: ['interface', 'type'] },
+        ],
+
+        'import/order': [
+          'error',
+          {
+            'newlines-between': 'always',
+            groups: [
+              'builtin',
+              'external',
+              'internal',
+              'type',
+              'parent',
+              'sibling',
+              'object',
+              'index',
+            ],
+            pathGroups: [
+              {
+                pattern: '@nestjs/**',
+                group: 'builtin',
+                position: 'before',
+              },
+              {
+                pattern: '**/interfaces/**',
+                group: 'type',
+                position: 'before',
+              },
+              {
+                pattern: 'src/**',
+                group: 'parent',
+                position: 'before',
+              },
+              {
+                pattern: './*',
+                group: 'sibling',
+                position: 'before',
+              },
+            ],
+            distinctGroup: true,
+            warnOnUnassignedImports: true,
+            pathGroupsExcludedImportTypes: ['@nestjs/**'],
+          },
+        ],
+        'simple-import-sort/imports': 'off',
+        'unicorn/filename-case': 'off',
+        'prefer-arrow/prefer-arrow-functions': 'off',
+        '@nx/workspace-max-consts-per-file': 'off',
+      },
+    },
+  ],
+};