[FEATURE]:Add .svelte files to list of file types supported by eslint lsp

[hugo-hsi-dev]

Feature hasn't been suggested before.

• [x] I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

The eslint lsp starts automatically for this set of file extensions:

.ts, .tsx, .js, .jsx, .mjs, .cjs, .mts, .cts, .vue

as stated in the docs

Would be nice to have it start for svelte files as well.