#### Background
This is the task to add native support for GPay into the Android Wikipedia App in partnership with fr-tech. Adding Native payment method support was one of the proposed enhancements identified for improving donor experience in the apps. Fr-tech and the iOS team have already added support for ApplePay.
#### Requirements
- Entry points for flow: 1) From the "Donate" option in settings 2) from an in-app banner
- An option to pay via GPay should be presented when tapping Donate
- Tapping "Donate with GPay" should launch the Payment Authorization view controller/action sheet
- The GooglePay option or any branding should not be visible if the user doesn't have GooglePay or is restricted for compliance reasons.
- Tapping "Other payment method" should launch the existing link used in the app into the donate.wikimedia.org
#### Technical notes
- The donation flow should be presentable from any context.
- For now, we don't need to keep track of successful donations or keep any local information about donation history. In the future, we may want to record a donation that has occurred to prevent additional asks from being shown, but for this version, no record of donation is required.
- This feature must work well with Dynamic Type and Voice Over.
#### Designs:
TBA
####Tasks:
[] Submit screenshots of how the integration will look, from start to finish of the transaction to google for approval
[] Gain production access to the GPay API, and the gateway that will produce tokens to give to the Fundraising endpoint, which proxies to Adyen etc.
####References from ApplePay implementation:
- ApplePay Parent task with designs: T288285