add npm token

Author: pmckinney-codat

.npmrc

@@ -1,3 +1,6 @@
 registry=https://pkgs.dev.azure.com/codat/Codat/_packaging/codat-npm/npm/registry/
 always-auth=true
-save-exact=true
+save-exact=true
+//pkgs.dev.azure.com/codat/Codat/_packaging/codat-npm/npm/registry/:username=codat
+//pkgs.dev.azure.com/codat/Codat/_packaging/codat-npm/npm/registry/:_password=${NPM_TOKEN}
+//pkgs.dev.azure.com/codat/Codat/_packaging/codat-npm/npm/registry/:email=[email protected]