first commit

lib/Screens/party ledger/model/party_leder_filer_param.dart

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+class PartyLedgerFilterParam {
+  final String partyId;
+  final String? duration;
+
+  PartyLedgerFilterParam({
+    required this.partyId,
+    this.duration,
+  });
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is PartyLedgerFilterParam &&
+          runtimeType == other.runtimeType &&
+          partyId == other.partyId &&
+          duration == other.duration;
+
+  @override
+  int get hashCode => partyId.hashCode ^ duration.hashCode;
+}