StripeCryptoOnramp: Collect Payment Method

[Twigz]

Summary

• Integrates the collectPaymentMethod functionality.
• Updated the sample app to showcase link payment behavior.

Motivation

Required functionality for the onramp SDK.

Testing

• Added tests
• Modified tests
• Manually verified

Recording

ScreenRecording.mp4

[github-actions]

Risky Change

This is considered a risky change because it adjusts the sample app build.gradle, please review carefully.
We've seen issues in the past which resulted in failed builds for merchants. Please make sure the build.gradle change is intended.

By adding the label accept-risky-change to this PR, I acknowledge that I'm changing an example app and have verified that the SDK remains in a shippable state.

[github-actions]

Diffuse output:

OLD: identity-example-release-base.apk (signature: V1, V2)
NEW: identity-example-release-pr.apk (signature: V1, V2)

          │          compressed          │         uncompressed         
          ├───────────┬───────────┬──────┼───────────┬───────────┬──────
 APK      │ old       │ new       │ diff │ old       │ new       │ diff 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
      dex │   2.1 MiB │   2.1 MiB │  0 B │   4.3 MiB │   4.3 MiB │  0 B 
     arsc │     1 MiB │     1 MiB │  0 B │     1 MiB │     1 MiB │  0 B 
 manifest │   2.3 KiB │   2.3 KiB │  0 B │     8 KiB │     8 KiB │  0 B 
      res │ 302.7 KiB │ 302.7 KiB │  0 B │ 456.5 KiB │ 456.5 KiB │  0 B 
   native │   7.9 MiB │   7.9 MiB │  0 B │  19.3 MiB │  19.3 MiB │  0 B 
    asset │   6.4 KiB │   6.4 KiB │  0 B │   6.2 KiB │   6.2 KiB │  0 B 
    other │  95.7 KiB │  95.7 KiB │ -4 B │ 183.5 KiB │ 183.5 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │  11.4 MiB │  11.4 MiB │ -4 B │  25.3 MiB │  25.3 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 20686 │ 20686 │ 0 (+0 -0) 
   types │  6505 │  6505 │ 0 (+0 -0) 
 classes │  5269 │  5269 │ 0 (+0 -0) 
 methods │ 31512 │ 31512 │ 0 (+0 -0) 
  fields │ 18233 │ 18233 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  164 │  164 │  0   
 entries │ 3648 │ 3648 │  0

APK

   compressed    │   uncompressed   │                                           
──────────┬──────┼───────────┬──────┤                                           
 size     │ diff │ size      │ diff │ path                                      
──────────┼──────┼───────────┼──────┼───────────────────────────────────────────
 29.2 KiB │ -8 B │  64.6 KiB │  0 B │ ∆ META-INF/CERT.SF                        
  1.2 KiB │ +2 B │   1.2 KiB │  0 B │ ∆ META-INF/CERT.RSA                       
    272 B │ +1 B │     120 B │  0 B │ ∆ META-INF/version-control-info.textproto 
 25.9 KiB │ +1 B │  64.5 KiB │  0 B │ ∆ META-INF/MANIFEST.MF                    
──────────┼──────┼───────────┼──────┼───────────────────────────────────────────
 56.5 KiB │ -4 B │ 130.5 KiB │  0 B │ (total)