add duckdb-ui-client & other ts pkgs (#10)

* add duckdb-ui-client & other ts pkgs

* workflow fixes

* fix working dir

* no sparse checkout; specify package.json path

* path to pnpm-lock.yaml

* add check & build test

* workflow step descriptions

* use comments & names

* one more naming tweak

ts/pkgs/duckdb-ui-client/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "@duckdb/ui-client",
+  "version": "0.0.1",
+  "description": "Client for communicating with the DuckDB UI server",
+  "type": "module",
+  "main": "./out/index.js",
+  "module": "./out/index.js",
+  "types": "./out/index.d.ts",
+  "scripts": {
+    "preinstall": "pnpm build:src",
+    "build": "tsc -b src test",
+    "build:src": "tsc -b src",
+    "build:test": "tsc -b test",
+    "build:watch": "tsc -b src test --watch",
+    "check": "pnpm format:check && pnpm lint",
+    "clean": "rimraf out",
+    "format:check": "prettier . --ignore-path $(find-up .prettierignore) --check",
+    "format:write": "prettier . --ignore-path $(find-up .prettierignore) --write",
+    "lint": "pnpm eslint src test",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
+  "dependencies": {
+    "@duckdb/data-reader": "workspace:*",
+    "@duckdb/data-types": "workspace:*",
+    "@duckdb/data-values": "workspace:*",
+    "core-js": "^3.41.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.24.0",
+    "eslint": "^9.24.0",
+    "find-up-cli": "^6.0.0",
+    "msw": "^2.10.2",
+    "prettier": "^3.5.3",
+    "rimraf": "^6.0.1",
+    "typescript": "^5.8.3",
+    "typescript-eslint": "^8.30.1",
+    "vite": "^6.2.6",
+    "vitest": "^3.1.1"
+  }
+}