Add package.json exports for derby/dist/{components,parsing,templates…

…,test-utils} for compat with TS classic moduleResolution

Some modules in derby, like test-utils, are not accessible from the root package export. TypeScript with the default classic moduleResolution (pre "node16") doesn't use the package.json exports field, so the only way to use such modules is by using the dist paths, e.g. 'derby/dist/test-utils' instead of the exports-mapped 'derby/test-utils'.

This adds package.json exports dist/* paths for a selection of such modules that are useful in consumers.

package.json

@@ -14,14 +14,19 @@
   "exports": {
     ".": "./dist/index.js",
     "./components": "./dist/components.js",
+    "./dist/components": "./dist/components.js",
     "./parsing": "./dist/parsing/index.js",
+    "./dist/parsing": "./dist/parsing/index.js",
     "./templates": "./dist/templates/index.js",
+    "./dist/templates": "./dist/templates/index.js",
     "./App": "./dist/App.js",
     "./AppForServer": "./dist/AppForServer.js",
     "./server": "./dist/server.js",
     "./Page": "./dist/Page.js",
     "./test-utils": "./dist/test-utils/index.js",
     "./test-utils/*": "./dist/test-utils/*.js",
+    "./dist/test-utils": "./dist/test-utils/index.js",
+    "./dist/test-utils/*": "./dist/test-utils/*.js",
     "./file-utils": "./dist/files.js"
   },
   "files": [