Replace deprecated i18next-parser with i18next-cli

i18next.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from "i18next-cli";
+
+export default defineConfig({
+  locales: ["en"],
+  extract: {
+    input: ["src/**/*.{ts,tsx}"],
+    output: "locales/{{language}}/{{namespace}}.json",
+    defaultNS: "app",
+    keySeparator: ".",
+    nsSeparator: false,
+    contextSeparator: "|",
+    extractFromComments: false,
+    functions: ["t", "*.t", "translatedError", "i18nKey"],
+    transComponents: ["Trans"],
+  },
+  types: {
+    input: ["locales/{{language}}/{{namespace}}.json"],
+    output: "src/types/i18next.d.ts",
+  },
+});