DGDS: Add new game variants for Willy Beamish

* EGA version (fixes #15872)
* Another German version (fixes #15873)

engines/dgds/detection_tables.h

@@ -176,7 +176,7 @@ static const ADGameDescription gameDescriptions[] = {
 		GUIO1(GUIO_NONE)
 	},
 
-	// Adventures of Willy Beamish (PC)
+	// Adventures of Willy Beamish (PC) German
 	{
 		"beamish",
 		0,
@@ -191,6 +191,21 @@ static const ADGameDescription gameDescriptions[] = {
 		GUIO1(GUIO_NONE)
 	},
 
+	// Adventures of Willy Beamish (PC) German, reported by ns394 (#15873)
+	{
+		"beamish",
+		0,
+		{
+			{"volume.rmf", 0, "2fcb1f39b06f7d02fdcd92bbeb203b5a", 9926},
+			{"volume.001", 0, "35d96af752f1ec6741d7d9b3f7f0f24f", 1154849},
+			AD_LISTEND
+		},
+		Common::DE_DEU,
+		Common::kPlatformDOS,
+		ADGF_TESTING,
+		GUIO1(GUIO_NONE)
+	},
+
 	// Adventures of Willy Beamish (PC FDD)
 	// 1.01, Int. 10.11.91 reported by gabberhead (#15773)
 	{
@@ -207,6 +222,21 @@ static const ADGameDescription gameDescriptions[] = {
 		GUIO1(GUIO_NONE)
 	},
 
+	// Adventures of Willy Beamish (PC FDD EGA), reported by ns394 (#15872)
+	{
+		"beamish",
+		"EGA",
+		{
+			{"volume.rmf", 0, "654e5e7d160b991baea10f127097cb62", 8901},
+			{"volume.001", 0, "9b1c60ab33b3515a6330a5aa49d8e99f", 684659},
+			AD_LISTEND
+		},
+		Common::EN_ANY,
+		Common::kPlatformDOS,
+		ADGF_UNSTABLE | ADGF_DGDS_EGA,
+		GUIO1(GUIO_NONE)
+	},
+
 	// Adventures of Willy Beamish (Macintosh)
 	{
 		"beamish",