Session tab animation

[takahirom]

Overview (Required)

• Move the chip frame
• It's very exciting. (I do not know how to implement it 😉 ) https://storage.googleapis.com/spec-host-backup/mio-design%2Fassets%2F1ZL4CiG4FN1MxyTuSqZqU_xX_V5pDakCs%2Fnavtransitions-peer.mp4

[NUmeroAndDev]

If it is only animation, it can be implemented only with TabLayout. https://github.com/NUmeroAndDev/conference-app-2019/commit/3b7a44f1b90f04923865de6004a92d157ff2242a

I challenged Ripple to be the same as the link, but it was difficult. 😢

[takahirom]

tabIndicator="@drawable/shape_pill_indicator" 🆒 it seems to be better than now. We can open Ripple effect issues after merge that!