add LICENSE as asset in ng-packagr config

Author: daiscog

libs/ngx-http-request-state/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 David Scourfield
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

libs/ngx-http-request-state/ng-package.json

@@ -3,5 +3,6 @@
   "dest": "../../dist/libs/ngx-http-request-state",
   "lib": {
     "entryFile": "src/index.ts"
-  }
+  },
+  "assets": ["LICENSE"]
 }

package.json

@@ -6,7 +6,6 @@
     "ng": "nx",
     "start": "nx serve examples",
     "build": "nx build ngx-http-request-state --configuration production",
-    "postbuild": "cp LICENSE dist/libs/ngx-http-request-state",
     "test": "nx run-many -t test",
     "lint": "nx run-many -t lint",
     "format": "nx format:write",