feat: Publish TypeScript types in Feast UI package

This makes the TypeScript definitions available in TypeScript projects that
use Feast UI as a module.

ui/package.json

@@ -6,6 +6,7 @@
     "dist"
   ],
   "main": "./dist/feast-ui.cjs",
+  "types": "./dist/FeastUI.d.ts",
   "module": "./dist/feast-ui.module.js",
   "peerDependencies": {
     "@elastic/datemath": "^5.0.3",
@@ -54,8 +55,8 @@
   "scripts": {
     "start": "npm run generate-protos && react-scripts start",
     "build": "npm run generate-protos && react-scripts build",
-    "build:lib": "npm run generate-protos && rimraf ./dist && tsc && rollup -c",
-    "build:lib-dev": "npm run generate-protos && rimraf ./dist && tsc && rollup -c && yalc publish -f",
+    "build:lib": "npm run generate-protos && rimraf ./dist && tsc --project ./tsconfig.build.json && rollup -c",
+    "build:lib-dev": "npm run build:lib && yalc publish -f",
     "test": "npm run generate-protos && react-scripts test",
     "eject": "react-scripts eject",
     "generate-protos": "pbjs --no-encode -o src/protos.js -w commonjs -t static-module `find ../protos/feast/ -iname *.proto` && pbts -n protos -o src/protos.d.ts src/protos.js"

ui/tsconfig.build.json

@@ -0,0 +1,11 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationMap": true,
+    "emitDeclarationOnly": true,
+    "noEmit": false,
+    "outDir": "./dist",
+    "rootDir": "./src"
+  }
+}