Install knip to keep the codebase in check

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

knip.ts

@@ -0,0 +1,49 @@
+import { KnipConfig } from "knip";
+
+export default {
+    entry: [
+        "src/vector/index.ts",
+        "src/serviceworker/index.ts",
+        "src/workers/*.worker.ts",
+        "src/utils/exportUtils/exportJS.js",
+        "scripts/**",
+        "playwright/**",
+        "test/**",
+        "res/decoder-ring/**",
+    ],
+    project: ["**/*.{js,ts,jsx,tsx}"],
+    ignore: [
+        "docs/**",
+        "res/jitsi_external_api.min.js",
+        // Keep for now
+        "src/hooks/useLocalStorageState.ts",
+        "src/components/views/elements/InfoTooltip.tsx",
+        "src/components/views/elements/StyledCheckbox.tsx",
+    ],
+    ignoreDependencies: [
+        // Required for `action-validator`
+        "@action-validator/*",
+        // Used for git pre-commit hooks
+        "husky",
+        // Used by jest
+        "babel-jest",
+        // Used by babel
+        "@babel/runtime",
+        "@babel/plugin-transform-class-properties",
+        // Referenced in PCSS
+        "github-markdown-css",
+        // False positive
+        "sw.js",
+        // Used by webpack
+        "buffer",
+        "process",
+        "util",
+        // Used by workflows
+        "ts-prune",
+    ],
+    ignoreBinaries: [
+        // Used in scripts & workflows
+        "jq",
+    ],
+    ignoreExportsUsedInFile: true,
+} satisfies KnipConfig;