eslint9アップデート。neostandardに移行 (#388)

Author: jay-es

.eslintrc.js

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+{}

.prettierrc

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+import neostandard from "neostandard";
+import tseslint from "typescript-eslint";
+
+export default [
+  ...neostandard({
+    ignores: ["lib/*"],
+    noStyle: true,
+    semi: true,
+    ts: true,
+  }),
+  ...tseslint.config(tseslint.configs.strict, tseslint.configs.stylistic),
+];