inventory: move serial console to system

SerialConsole was deprecated in Manager v1_10_0 and has been
removed in bmcweb [1].

Because the SerialConsole values were not available anymore, the
Managers were not displayed because "setBmcInfo" couldn't find the
"SerialConsole" properties. THe following error will be logged:

```
TypeError: Cannot read properties of undefined (reading 'ConnectTypesSupported')
    at Wa.setBmcInfo (app.25e72670.js:58:745295)
    at app.25e72670.js:50:2774
    at app.25e72670.js:50:10113
    at Array.forEach (<anonymous>)
    at app.25e72670.js:50:10092
    at Wa._withCommit (app.25e72670.js:50:11953)
    at Wa.commit (app.25e72670.js:50:10066)
    at Wa.commit (app.25e72670.js:50:9518)
    at o.commit (app.25e72670.js:50:2216)
    at app.25e72670.js:58:745747
```

[1]: https://github.com/openbmc/bmcweb/commit/fa800c8a141aa4b209269e0fb50cae34aa24f75d

Tested: BMC manager being listed in the inventory and serial console
        variables being displayed for the system.

Change-Id: I1a24178717805ca50eef2c89042c0bd9ede1d5bc
Signed-off-by: Tan Siewert <tan@siewert.io>
diff --git a/src/store/modules/HardwareStatus/SystemStore.js b/src/store/modules/HardwareStatus/SystemStore.js
index 50c8b6f..7fbd6bc 100644
--- a/src/store/modules/HardwareStatus/SystemStore.js
+++ b/src/store/modules/HardwareStatus/SystemStore.js
@@ -27,6 +27,9 @@
       system.processorSummaryCoreCount = data.ProcessorSummary?.CoreCount;
       system.powerState = data.PowerState;
       system.serialNumber = data.SerialNumber;
+      system.serialConsoleEnabled = data.SerialConsole.ServiceEnabled;
+      system.serialConsoleMaxSessions =
+        data.SerialConsole.MaxConcurrentSessions;
       system.healthRollup = data.Status?.HealthRollup;
       system.subModel = data.SubModel;
       system.statusState = data.Status?.State;