added calendar view to appointments

- NOTE: may have to change appointments abit after backend is updated

android/gradle.properties

@@ -15,6 +15,8 @@ org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 # Android operating system, and which are packaged with your app's APK
 # https://developer.android.com/topic/libraries/support-library/androidx-rn
 android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library