fix: query units SerialNames are the response ones

After moving to a `Map<*, Unit>`, the "special" units were left only for queries

Author: DadiBit

lib/src/main/kotlin/com/openmeteo/api/common/units/TemperatureUnit.kt

@@ -5,9 +5,9 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 enum class TemperatureUnit {
-    @SerialName("°C")
+    @SerialName("celsius")
     Celsius,
 
-    @SerialName("°F")
+    @SerialName("fahrenheit")
     Fahrenheit,
 }

lib/src/main/kotlin/com/openmeteo/api/common/units/WindSpeedUnit.kt

@@ -5,15 +5,15 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 enum class WindSpeedUnit {
-    @SerialName("km/h")
+    @SerialName("kmh")
     KilometresPerHour,
 
-    @SerialName("m/s")
+    @SerialName("ms")
     MetresPerSeconds,
 
     @SerialName("mph")
     MilesPerHour,
 
-    @SerialName("knots")
+    @SerialName("kn")
     Knots,
 }