platform specific log file location support

src/main/java/com/sparrowwallet/drongo/PropertyDefiner.java

@@ -0,0 +1,21 @@
+package com.sparrowwallet.drongo;
+
+import ch.qos.logback.core.PropertyDefinerBase;
+
+public class PropertyDefiner extends PropertyDefinerBase {
+    private String application;
+
+    public void setApplication(String application) {
+        this.application = application;
+    }
+
+    @Override
+    public String getPropertyValue() {
+        return isWindows() ? System.getenv("APPDATA") + "/" + application.substring(0, 1).toUpperCase() + application.substring(1) : System.getProperty("user.home") + "/." + application;
+    }
+
+    private boolean isWindows() {
+        String osName = System.getProperty("os.name");
+        return (osName != null && osName.toLowerCase().startsWith("windows"));
+    }
+}

src/main/java/module-info.java

@@ -2,6 +2,7 @@ open module com.sparrowwallet.drongo {
     requires org.bouncycastle.provider;
     requires de.mkammerer.argon2;
     requires slf4j.api;
+    requires logback.core;
     requires json.simple;
     requires jeromq;
     exports com.sparrowwallet.drongo;