build: add editorconfig and knip config

VA-851

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

knip.config.ts

@@ -0,0 +1,23 @@
+import type { KnipConfig } from "knip";
+
+const config: KnipConfig = {
+  workspaces: {
+    "packages/cli": {
+      entry: ["src/cli.ts"],
+    },
+    "packages/core": {
+      entry: ["src/index.ts", "src/lint/index.ts", "src/compiler/index.ts"],
+    },
+    "packages/engine": {
+      entry: ["src/index.ts"],
+    },
+    "packages/producer": {
+      entry: ["src/index.ts", "src/server.ts"],
+    },
+    "packages/studio": {
+      entry: ["src/index.ts", "src/styles/tailwind-preset.ts"],
+    },
+  },
+};
+
+export default config;