refactor: tiny url to use require decorators and wallet.id

[dni]

• also use wallet.wallet.id as key instead of wallet.wallet.inkey

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 58.52%. Comparing base (8dcb53a) to head (8401830).

Files	Patch %	Lines
lnbits/core/views/tinyurl_api.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2338      +/-   ##
==========================================
+ Coverage   58.51%   58.52%   +0.01%     
==========================================
  Files          61       61              
  Lines        9271     9271              
==========================================
+ Hits         5425     5426       +1     
+ Misses       3846     3845       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.