Feature/google maps 3 sdk

[kibotu]

added google maps 3 sdk #21

from my observation:

pro:

• camera movement is a bit faster
• tiles load faster
• api is compatible with maps2: routing, marker, tiles, camera, events, map styles, polylines, polygones, etc.
• compatible with gmaps utils (they have their own version but looks like same api)

cons:

• no maven repository (google forces you to add a local aar)
• not compatible with GlideModule #Issue-132323222

i've added a fork of this feature as jitpack tag: https://jitpack.io/#kibotu/trail-android/2.0.2 for people who want to try out gmaps 3 sdk

(integration can be found here: https://github.com/kibotu/trail-android/blob/2.0.2/app/build.gradle#L41-L50)

    // google maps 3 sdk integration
    // https://developers.google.com/maps/documentation/android-sdk/v3-client-migration
    // demo project: https://github.com/googlemaps/android-samples/tree/v3-beta/ApiDemos/kotlin
    implementation name: 'maps-sdk-3.0.0-beta', ext: 'aar'
    implementation 'com.google.maps.android:android-maps-utils-sdk-v3-compat:0.1'

    implementation 'com.google.android.gms:play-services-basement:17.1.1'
    implementation 'com.google.android.gms:play-services-base:17.1.0'
    implementation 'com.google.android.gms:play-services-gcm:17.0.0'
    implementation 'com.google.android.gms:play-services-location:17.0.0'