feat: add isPlatformAccount to PaymentInstructions and remove PaymentAccountOrWalletInfo refs#128

pengying merged 2 commits intomainlightsparkdev/grid-api:mainfrom

01-24-feat_flatten_lightningexternalaccountinfo_schema_splitlightsparkdev/grid-api:01-24-feat_flatten_lightningexternalaccountinfo_schema_splitCopy head branch name to clipboard