Modify intent extension API to parse redemption links to mimick iOS

[tonidero]

Description

This modifies the Intent.parseAsWebPurchaseRedemption() method to Intent.asWebPurchaseRedemption following the naming of the API in the iOS SDK, so we consolidate them. This is a breaking change but this is an experimental API not open to developers yet so it should be safe.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.87%. Comparing base (50a3a78) to head (b53819c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...otlin/com/revenuecat/purchases/IntentExtensions.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1949   +/-   ##
=======================================
  Coverage   81.87%   81.87%           
=======================================
  Files         260      260           
  Lines        8493     8493           
  Branches     1226     1226           
=======================================
  Hits         6954     6954           
  Misses       1041     1041           
  Partials      498      498           

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