fix(exports): add primitives and hooks to package.json exports map

Allows consumers to import from @pathscale/ui/primitives/* and
@pathscale/ui/hooks/* directly, avoiding the barrel import that
prevented tree-shaking of unused components.

Author: Alexey Budilovich

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pathscale/ui",
-  "version": "1.1.37",
+  "version": "1.1.38",
   "author": "pathscale",
   "repository": {
     "type": "git",
@@ -31,6 +31,14 @@
       "types": "./dist/components/*/index.d.ts",
       "import": "./dist/components/*/index.js"
     },
+    "./primitives/*": {
+      "types": "./dist/primitives/*/index.d.ts",
+      "import": "./dist/primitives/*/index.js"
+    },
+    "./hooks/*": {
+      "types": "./dist/hooks/*/index.d.ts",
+      "import": "./dist/hooks/*/index.js"
+    },
     "./stores": {
       "types": "./dist/stores/index.d.ts",
       "import": "./dist/stores/index.js"