Final eslint 8.57 adjustements.

There are still some FIXME, but should be enought for now.

client/.eslintrc.json

@@ -1,41 +0,0 @@
-{
-    "root": true,
-    "env": {
-        "browser": true,
-        "es6": true
-    },
-    "extends": [
-      "eslint-config-love",
-      "plugin:lit/recommended"
-    ],
-    "globals": {},
-    "parser": "@typescript-eslint/parser",
-    "parserOptions": {
-        "ecmaVersion": 2018,
-        "project": [
-            "./client/tsconfig.json"
-        ]
-    },
-    "plugins": [
-        "@typescript-eslint"
-    ],
-    "ignorePatterns": [],
-    "rules": {
-      "@typescript-eslint/no-unused-vars": [2, {"argsIgnorePattern": "^_"}],
-      "@typescript-eslint/no-floating-promises": "error",
-      "@typescript-eslint/no-misused-promises": "error",
-      "@typescript-eslint/no-var-requires": "off",
-      "@typescript-eslint/strict-boolean-expressions": "off",
-      "@typescript-eslint/return-await": [2, "in-try-catch"], // FIXME: correct?
-      "@typescript-eslint/no-invalid-void-type": "off",
-      "@typescript-eslint/triple-slash-reference": "off",
-      "max-len": [
-        "error",
-        {
-          "code": 120,
-          "comments": 120
-        }
-      ],
-      "no-unused-vars": "off"
-  }
-}

client/.eslintrc.json.license

@@ -1,3 +0,0 @@
-SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
-
-SPDX-License-Identifier: AGPL-3.0-only