[Codacy] Define a constant instead of using this literal 'Amount' 4 times.

[github-actions]

Codacy finding

• Repository: TransactionProcessing/TransactionMobile
• Codacy org: TransactionProcessing
• Codacy repo: TransactionMobile
• Codacy issue ID: 243f42324184f3682b95cc20d58e7913
• Codacy issue: https://app.codacy.com/gh/TransactionProcessing/TransactionMobile/issues/243f42324184f3682b95cc20d58e7913
• File: TransactionProcessor.Mobile.BusinessLogic/Common/Extensions.cs
• Line: 224
• Rule: SonarCSharp_S1192
• Severity: Warning

Message: Define a constant instead of using this literal 'Amount' 4 times.

Sync metadata

Sync key: TransactionProcessing/TransactionMobile::TransactionProcessing/TransactionMobile::243f42324184f3682b95cc20d58e7913