Deserialize std::variant without throwing exception

configs/ddr3-example.json

@@ -7,6 +7,7 @@
         "simulationid": "ddr3-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 800,
                 "name": "traces/example.stl"
             }

configs/ddr4-example.json

@@ -7,6 +7,7 @@
         "simulationid": "ddr4-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 200,
                 "name": "traces/example.stl"
             }

configs/ddr4-full-example.json

@@ -210,6 +210,7 @@
         "simulationid": "ddr4-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 200,
                 "name": "traces/example.stl"
             }

configs/ddr5-example.json

@@ -7,6 +7,7 @@
         "simulationid": "ddr5-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 2000,
                 "name": "traces/example.stl"
             }

configs/hbm2-example.json

@@ -7,6 +7,7 @@
         "simulationid": "hbm2-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 1000,
                 "name": "traces/example.stl"
             }

configs/lpddr4-example.json

@@ -7,6 +7,7 @@
         "simulationid": "lpddr4-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 200,
                 "name": "traces/example.stl"
             }

configs/lpddr5-example.json

@@ -7,6 +7,7 @@
         "simulationid": "lpddr5-example",
         "tracesetup": [
             {
+                "type": "player",
                 "clkMhz": 200,
                 "name": "traces/example.stl"
             }