fix(ci): add missing eslint/prettier/typescript devDeps, fix tsconfig types

Add eslint@^8.57.0, @headlamp-k8s/eslint-config@^0.6.0, prettier@^2.8.8,
typescript@~5.6.2 as explicit devDependencies. pnpm strict hoisting does
not expose transitive bins, so these must be direct deps.

Remove vite/client and vite-plugin-svgr/client from tsconfig types; these
are transitive deps pnpm does not hoist and polaris plugin omits them.

tsconfig.json

@@ -2,7 +2,7 @@
   "extends": "@kinvolk/headlamp-plugin/config/plugins-tsconfig.json",
   "compilerOptions": {
     "module": "esnext",
-    "types": ["vite/client", "vite-plugin-svgr/client", "vitest/globals", "@testing-library/jest-dom"]
+    "types": ["vitest/globals", "@testing-library/jest-dom"]
   },
   "include": ["src"]
 }