refactor confirmation tiers to shared crypto-agnostic types and validation

backend/src/config/validate.ts

@@ -3,7 +3,7 @@ import { IsBoolean, IsEnum, IsNotEmpty, IsNumber, IsString, Max, Min, validateSy
 import { NodeEnv } from '../types/NodeEnv';
 import { ShopFiatCurrency } from '../types/ShopFiatCurrency';
 import { IsBase64 } from '../validation/decorators/isBase64';
-import { IsMoneroConfirmationTiers } from '../validation/decorators/isMoneroConfirmationTiers';
+import { IsConfirmationTiers } from '../validation/decorators/isConfirmationTiers';
 import { MoneroNetwork } from '../types/MoneroNetwork';
 
 class EnvironmentVariables {
@@ -265,7 +265,7 @@ class EnvironmentVariables {
 
     @IsNotEmpty()
     @IsString()
-    @IsMoneroConfirmationTiers()
+    @IsConfirmationTiers()
     MONERO_CONFIRMATION_TIERS: string;
 
     @IsNotEmpty()