Added SystemInfo and FileSystems to query system and file system information, respectively.

src/main/java/net/rubygrapefruit/platform/internal/DefaultFileSystem.java

@@ -0,0 +1,39 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.FileSystem;
+
+import java.io.File;
+
+public class DefaultFileSystem implements FileSystem {
+    private final File mountPoint;
+    private final String fileSystemType;
+    private final String deviceName;
+    private final boolean remote;
+
+    public DefaultFileSystem(File mountPoint, String fileSystemType, String deviceName, boolean remote) {
+        this.mountPoint = mountPoint;
+        this.fileSystemType = fileSystemType;
+        this.deviceName = deviceName;
+        this.remote = remote;
+    }
+
+    @Override
+    public String getDeviceName() {
+        return deviceName;
+    }
+
+    @Override
+    public File getMountPoint() {
+        return mountPoint;
+    }
+
+    @Override
+    public String getFileSystemType() {
+        return fileSystemType;
+    }
+
+    @Override
+    public boolean isRemote() {
+        return remote;
+    }
+}