Add BigInteger support for capacity handling and enhance UI for capacity selection

src/main/java/be/seeseepuff/pcinv/models/RamAsset.java

@@ -5,6 +5,8 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.Setter;
 
+import java.math.BigInteger;
+
 /**
  * Represents a RAM DIMM or similar memory asset in the inventory system.
  */
@@ -28,7 +30,7 @@ public class RamAsset implements Asset
 
 	@Property("Capacity")
 	@Capacity
-	private Long capacity;
+	private BigInteger capacity;
 
 	@Description("The type of memory. E.g.: DDR2, SDRAM, ISA-8, etc...")
 	@Property("Type")