[Animation] feat: Ionic Animations should convert easing to animation-timing-function

[liamdebeasi]

Feature Request

Ionic version:

[x] 4.x

Describe the Feature Request

Web Animations requires users to provide per-keyframe easing via the easing key. CSS Animations use animation-timing-function instead.

Describe Preferred Solution

Ideally, developers would just use the easing key in their keyframe objects and Ionic Animations would convert easing to animation-timing-function on browsers that do not support Web Animations.

[ionitron-bot]

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