feat(datepicker): @Output for year and month selected in multiyear/year (#9678)

* feat(datepicker): @Output of year and month selected in multiyear/year
views

* address @mmalerba's comments

* address comments

* add types to some outputs

* fix wrong parameter type

* restore accidentally removed object

* example and docs text

* change emitted values to objects instead of just numbers

* change datepicker.md and switch back tslint configs

* fix nit

* Remove changes in demo app

package-lock.json

@@ -11265,7 +11265,7 @@
         "q": "1.5.1",
         "sauce-connect-launcher": "1.2.3",
         "saucelabs": "1.4.0",
-        "wd": "1.4.1"
+        "wd": "1.5.0"
       },
       "dependencies": {
         "q": {
@@ -18067,9 +18067,9 @@
       "dev": true
     },
     "wd": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/wd/-/wd-1.4.1.tgz",
-      "integrity": "sha512-C0wWd2X4SWWcyx5qxaixiZE4Vb07sl0yDfWHPeml8lDHSbmI9erE9BmTHIqOGoDxGgJ3/hkFmODQ7ZLKiF8+8Q==",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/wd/-/wd-1.5.0.tgz",
+      "integrity": "sha512-e/KpzTlhtSG3Ek0AcRz4G6PhxGsc53Nro+GkI1er9p05tWQ7W9dpGZR5SqQzGUqvbaqJCThDSAGaY7LHgi6MiA==",
       "dev": true,
       "requires": {
         "archiver": "1.3.0",