[android] add support for schuko/type-E charge sockets

The commit is slightly more complicated that expected because:

- it adds supports for both schuko and type-E, using the same icon (but
  maintaining the underlying type annotated in OSM)

- it adds logic to *not* display the power of schuko socket as 'unknown'
  when not provided in OSM, as it is 'implicit' (3.7kW in most
  countries)

Signed-off-by: Séverin Lemaignan <severin@guakamole.org>

android/sdk/src/main/java/app/organicmaps/sdk/bookmarks/data/ChargeSocketDescriptor.java

@@ -1,7 +1,33 @@
 package app.organicmaps.sdk.bookmarks.data;
 
+import java.text.DecimalFormat;
+
 /**
  * represents the details of the socket available on a particular charging station
  *
  */
-public record ChargeSocketDescriptor(String type, int count, double power) {}
+public record ChargeSocketDescriptor(String type, int count, double power) {
+
+    /**
+     * Some charge sockets have the same visuals as other sockets, even though they are different and are tagged
+     * differently in OSM. This method returns the 'visual' type that should be used for the socket.
+     *
+     * @return the 'equivalent' visual style that should be used for this socket
+     */
+    public String visualType() {
+        if (type.equals("typee")) {
+            return "schuko";
+        }
+        return type;
+    }
+
+    /**
+     * For some sockets (eg, domestic sockets), the power is usually not provided, as it is 'implicit'
+     *
+     * @return true if this socket type does not require displaying the power
+     */
+    public Boolean ignorePower() {
+        return type.equals("typee") || type.equals("schuko");
+    }
+
+}