chore: upgrade dependencies and tooling

.gitignore

@@ -7,3 +7,4 @@ build
 src/routes/.DS_Store
 .DS_Store
 static/blog/images
+package-lock.json

eslint.config.js

@@ -0,0 +1,41 @@
+import js from '@eslint/js';
+import eslintPluginSvelte from 'eslint-plugin-svelte';
+import eslintConfigPrettier from 'eslint-config-prettier';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+
+const projectParserOptions = {
+        project: './tsconfig.json',
+        tsconfigRootDir: new URL('.', import.meta.url),
+        extraFileExtensions: ['.svelte']
+};
+
+export default tseslint.config(
+        { ignores: ['.svelte-kit/**/*', 'build/**/*', 'dist/**/*', 'node_modules/**/*'] },
+        js.configs.recommended,
+        ...tseslint.configs.recommendedTypeChecked,
+        ...tseslint.configs.stylisticTypeChecked,
+        ...eslintPluginSvelte.configs['flat/recommended'],
+        {
+                files: ['**/*.{js,ts,svelte}'],
+                languageOptions: {
+                        parserOptions: projectParserOptions,
+                        globals: {
+                                ...globals.browser,
+                                ...globals.node
+                        }
+                }
+        },
+        {
+                files: ['**/*.svelte'],
+                languageOptions: {
+                        parserOptions: projectParserOptions
+                },
+                processor: eslintPluginSvelte.processors.svelte,
+                settings: {
+                        'svelte/typescript': true,
+                        'svelte/config': 'svelte.config.js'
+                }
+        },
+        eslintConfigPrettier
+);