Support numeric effecters in dbus-to-host-effecter

Adds support of the numeric effecter PDR (section `28.11 Numeric
Effecter PDR` DSP0248 V1.3.0) type in dbus-to-host-effecter handler.
This handler will be applied for all PLDM termini but not only host.
The setting for one numeric effecter of one device can be:
{
    "mctp_eid": 20,
    "effecter_info": {
        "effecterPdrType": 9,
        "effecterID": 2,
        "entityType": 32903,
        "entityInstance": 2,
        "containerID": 2,
        "compositeEffecterCount": 1,
        "checkHostState": false
    },
    "effecters": [
        {
            "dbus_info": {
                "object_path": "/xyz/openbmc_project/sensors/power/A",
                "interface": "xyz.openbmc_project.Sensor.Value",
                "property_name": "Value",
                "property_type": "double"
            },
            "effecterDataSize": 5,
            "resolution": 1,
            "offset": 0,
            "unitModifier": 0
        }
    ]
}

Where:
+ effecterPdrType to difference state/numeric effecter type. Default
is state effecter.
+ effecterID should be effecter ID and should not empty.
+ checkHostState can be set to false to bypass checking host state.
+ effecterDataSize, resolution, offset, unitModifier are from numeric
effecter PDR (section `28.11 Numeric Effecter PDR` DSP0248 V1.3.0)

Signed-off-by: Thu Nguyen <thu@os.amperecomputing.com>
Change-Id: I438d7f204643edd4066e8a6ba28d53a97503fc4b
diff --git a/common/utils.cpp b/common/utils.cpp
index e652021..6f39321 100644
--- a/common/utils.cpp
+++ b/common/utils.cpp
@@ -677,5 +677,66 @@
     }
     return name;
 }
+
+bool dbusPropValuesToDouble(const std::string_view& type,
+                            const pldm::utils::PropertyValue& value,
+                            double* doubleValue)
+{
+    if (!dbusValueNumericTypeNames.contains(type))
+    {
+        return false;
+    }
+
+    if (!doubleValue)
+    {
+        return false;
+    }
+
+    try
+    {
+        if (type == "uint8_t")
+        {
+            *doubleValue = static_cast<double>(std::get<uint8_t>(value));
+        }
+        else if (type == "int16_t")
+        {
+            *doubleValue = static_cast<double>(std::get<int16_t>(value));
+        }
+        else if (type == "uint16_t")
+        {
+            *doubleValue = static_cast<double>(std::get<uint16_t>(value));
+        }
+        else if (type == "int32_t")
+        {
+            *doubleValue = static_cast<double>(std::get<int32_t>(value));
+        }
+        else if (type == "uint32_t")
+        {
+            *doubleValue = static_cast<double>(std::get<uint32_t>(value));
+        }
+        else if (type == "int64_t")
+        {
+            *doubleValue = static_cast<double>(std::get<int64_t>(value));
+        }
+        else if (type == "uint64_t")
+        {
+            *doubleValue = static_cast<double>(std::get<uint64_t>(value));
+        }
+        else if (type == "double")
+        {
+            *doubleValue = static_cast<double>(std::get<double>(value));
+        }
+        else
+        {
+            return false;
+        }
+    }
+    catch (const std::exception& e)
+    {
+        return false;
+    }
+
+    return true;
+}
 } // namespace utils
 } // namespace pldm