chore(deps): replace git-user-info; upgrade Sanity and TypeScript (#284)

* chore: initial build with passing tests

* chore: updating deps

* fix(deps): upgrade @typescript-eslint to v8.26.0 and migrate to flat config

  Resolves TypeScript 5.8.3 compatibility warning by upgrading from v7.18.0.
  Migrates ESLint configuration from legacy .eslintrc.js to modern flat config format.
  Implements project service for improved performance and TypeScript integration.

Author: rcmaples

.eslintrc.js

@@ -0,0 +1,70 @@
+import typescriptEslint from '@typescript-eslint/eslint-plugin'
+import typescriptParser from '@typescript-eslint/parser'
+import prettier from 'eslint-plugin-prettier'
+
+export default [
+  {
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      parser: typescriptParser,
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+      ecmaVersion: 2022,
+      sourceType: 'module',
+    },
+    plugins: {
+      '@typescript-eslint': typescriptEslint,
+      prettier,
+    },
+    rules: {
+      ...typescriptEslint.configs.recommended.rules,
+      'prettier/prettier': 'error',
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-unused-vars': 'off',
+      'no-shadow': 'off',
+      'no-await-in-loop': 'off',
+      'no-console': 'off',
+      complexity: 'off',
+      'id-length': 'off',
+      'max-depth': 'off',
+      'no-sync': 'off',
+      strict: 'off',
+    },
+    settings: {
+      'import/ignore': ['\\.css$', '.*node_modules.*', '.*:.*'],
+      'import/resolver': {
+        node: {
+          paths: ['src'],
+          extensions: ['.js', '.jsx', '.ts', '.tsx'],
+        },
+      },
+    },
+  },
+  {
+    files: ['**/*.{js,jsx}'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'module',
+    },
+    plugins: {
+      prettier,
+    },
+    rules: {
+      'prettier/prettier': 'error',
+      'no-shadow': 'off',
+      'no-await-in-loop': 'off',
+      'no-console': 'off',
+      complexity: 'off',
+      'id-length': 'off',
+      'max-depth': 'off',
+      'no-sync': 'off',
+      strict: 'off',
+    },
+  },
+  {
+    ignores: ['test/fixtures/**', 'dist/**', 'node_modules/**', 'assets/**'],
+  },
+]