Use Path instead of File for floodgate key file in config

...and fix related issues with the file not being found.

bootstrap/bukkit/src/main/java/org/geysermc/platform/bukkit/GeyserBukkitConfiguration.java

@@ -29,6 +29,8 @@ import org.bukkit.configuration.file.FileConfiguration;
 import org.geysermc.common.IGeyserConfiguration;
 
 import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -100,8 +102,8 @@ public class GeyserBukkitConfiguration implements IGeyserConfiguration {
     }
 
     @Override
-    public File getFloodgateKeyFile() {
-        return new File(dataFolder.toString() + config.getString("floodgate-key-file", "public-key.pem"));
+    public Path getFloodgateKeyFile() {
+        return Paths.get(dataFolder.toString(), config.getString("floodgate-key-file", "public-key.pem"));
     }
 
     @Override

bootstrap/bungeecord/src/main/java/org/geysermc/platform/bungeecord/GeyserBungeeConfiguration.java

@@ -30,6 +30,8 @@ import net.md_5.bungee.config.Configuration;
 import org.geysermc.common.IGeyserConfiguration;
 
 import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -101,8 +103,8 @@ public class GeyserBungeeConfiguration implements IGeyserConfiguration {
     }
 
     @Override
-    public File getFloodgateKeyFile() {
-        return new File(dataFolder, config.getString("floodgate-key-file", "public-key.pem"));
+    public Path getFloodgateKeyFile() {
+        return Paths.get(dataFolder.toString(), config.getString("floodgate-key-file", "public-key.pem"));
     }
 
     @Override

bootstrap/sponge/src/main/java/org/geysermc/platform/sponge/GeyserSpongeConfiguration.java

@@ -32,6 +32,8 @@ import ninja.leaping.configurate.ConfigurationNode;
 import org.geysermc.common.IGeyserConfiguration;
 
 import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -104,8 +106,8 @@ public class GeyserSpongeConfiguration implements IGeyserConfiguration {
     }
 
     @Override
-    public File getFloodgateKeyFile() {
-        return new File(dataFolder, node.getNode("floodgate-key-file").getString("public-key.pem"));
+    public Path getFloodgateKeyFile() {
+        return Paths.get(dataFolder.toString(), node.getNode("floodgate-key-file").getString("public-key.pem"));
     }
 
     @Override

bootstrap/standalone/src/main/java/org/geysermc/platform/standalone/GeyserConfiguration.java

@@ -27,10 +27,13 @@ package org.geysermc.platform.standalone;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
+
 import lombok.Getter;
+
 import org.geysermc.common.IGeyserConfiguration;
 
-import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Map;
 
 @JsonIgnoreProperties(ignoreUnknown = true)
@@ -63,8 +66,8 @@ public class GeyserConfiguration implements IGeyserConfiguration {
     private MetricsInfo metrics;
 
     @Override
-    public File getFloodgateKeyFile() {
-        return new File(floodgateKeyFile);
+    public Path getFloodgateKeyFile() {
+        return Paths.get(floodgateKeyFile);
     }
 
     @Getter

common/src/main/java/org/geysermc/common/IGeyserConfiguration.java

@@ -25,7 +25,7 @@
 
 package org.geysermc.common;
 
-import java.io.File;
+import java.nio.file.Path;
 import java.util.Map;
 
 public interface IGeyserConfiguration {
@@ -46,7 +46,7 @@ public interface IGeyserConfiguration {
 
     boolean isAllowThirdPartyCapes();
 
-    File getFloodgateKeyFile();
+    Path getFloodgateKeyFile();
 
     IMetricsInfo getMetrics();
 

connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java

@@ -66,7 +66,6 @@ import org.geysermc.floodgate.util.EncryptionUtil;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
-import java.nio.file.Paths;
 import java.security.NoSuchAlgorithmException;
 import java.security.PublicKey;
 import java.security.spec.InvalidKeySpecException;
@@ -190,7 +189,7 @@ public class GeyserSession implements CommandSender {
                     PublicKey key = null;
                     try {
                         key = EncryptionUtil.getKeyFromFile(
-                                Paths.get(connector.getConfig().getFloodgateKeyFile().getPath()),
+                                connector.getConfig().getFloodgateKeyFile(),
                                 PublicKey.class
                         );
                     } catch (IOException | InvalidKeySpecException | NoSuchAlgorithmException e) {