feat(statics): add negative network fee feature

WIN-7591

TICKET: WIN-7591

Author: akarath

modules/statics/src/base.ts

@@ -508,6 +508,10 @@ export enum CoinFeature {
    * This coin requires a deposit acceptance transaction
    */
   REQUIRES_DEPOSIT_ACCEPTANCE_TRANSACTION = 'requires-deposit-acceptance-transaction',
+  /**
+   * This coin allows negative fees in transactions
+   */
+  ALLOWS_NEGATIVE_FEE = 'allows-negative-fee',
 }
 
 /**

modules/statics/src/coinFeatures.ts

@@ -399,12 +399,14 @@ export const SUI_FEATURES = [
   CoinFeature.CUSTODY_BITGO_FRANKFURT,
   CoinFeature.CUSTODY_BITGO_GERMANY,
   CoinFeature.CUSTODY_BULK_TRANSACTION,
+  CoinFeature.ALLOWS_NEGATIVE_FEE,
 ];
 export const SUI_TOKEN_FEATURES = [
   ...ACCOUNT_COIN_DEFAULT_FEATURES,
   CoinFeature.TSS,
   CoinFeature.TSS_COLD,
   CoinFeature.BULK_TRANSACTION,
+  CoinFeature.ALLOWS_NEGATIVE_FEE,
 ];
 export const SUI_TOKEN_FEATURES_EXCLUDE_SINGAPORE = SUI_TOKEN_FEATURES.filter(
   (feature) => feature !== CoinFeature.CUSTODY_BITGO_SINGAPORE