chore(website): add eslint (#9560)

- [x] Add eslint configured for NextJS
- [x] Add lint before build
- [x] Fix errors

.github/codespellrc

@@ -1,3 +1,3 @@
 [codespell]
 skip = ./elixir/_build,./elixir/apps/domain/lib/domain/name_generator.ex,./**/*.svg,./elixir/deps,./**/*.min.js,./kotlin/android/app/build,./kotlin/android/build,./e2e/pnpm-lock.yaml,./website/.next,./website/pnpm-lock.yaml,./rust/connlib/tunnel/testcases,./rust/gui-client/dist,./rust/gui-client/pnpm-lock.yaml,./rust/target,Cargo.lock,./website/docs/reference/api/*.mdx,./**/erl_crash.dump,./cover,./vendor,*.json,seeds.exs,./**/node_modules,./deps,./priv/static,./priv/plts,./**/priv/static,./.git,./_build,*.cast,./**/proptest-regressions
-ignore-words-list = optin,crate,keypair,keypairs,iif,statics,wee,anull,commitish,inout,fo,superceded,ect,installin
+ignore-words-list = optin,crate,keypair,keypairs,iif,statics,wee,anull,commitish,inout,fo,superceded,ect,installin,couldn,wasn,isn

.github/pre-commit-config.yaml

@@ -27,7 +27,7 @@ repos:
 
   # Standard pre-commit hooks
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.6.0
+    rev: v6.0.0
     hooks:
       - id: mixed-line-ending
         args: ["--fix=lf"]