refactor(ngcc): add packageName property to EntryPoint interface (#37040)

This commit adds a `packageName` property to the `EntryPoint` interface.
In a subsequent commit this will be used to retrieve the correct ngcc
configuration for each package, regardless of its path.

PR Close #37040

packages/compiler-cli/ngcc/test/helpers/utils.ts

@@ -22,6 +22,7 @@ export function makeTestEntryPoint(
   return {
     name: entryPointName,
     path: absoluteFrom(`/node_modules/${entryPointName}`),
+    packageName,
     packagePath: absoluteFrom(`/node_modules/${packageName}`),
     packageJson: {name: entryPointName},
     typings: absoluteFrom(`/node_modules/${entryPointName}/index.d.ts`),