feat: support SFTP

Refs #10
Refs #9
Refs #6

src/test/kotlin/app/termora/SFTPTest.kt

@@ -0,0 +1,54 @@
+package app.termora
+
+import org.apache.sshd.sftp.client.impl.DefaultSftpClientFactory
+import org.testcontainers.containers.GenericContainer
+import java.nio.file.Files
+import kotlin.test.AfterTest
+import kotlin.test.BeforeTest
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class SFTPTest {
+    private val sftpContainer = GenericContainer("linuxserver/openssh-server")
+        .withEnv("PUID", "1000")
+        .withEnv("PGID", "1000")
+        .withEnv("TZ", "Etc/UTC")
+        .withEnv("SUDO_ACCESS", "true")
+        .withEnv("PASSWORD_ACCESS", "true")
+        .withEnv("USER_NAME", "foo")
+        .withEnv("USER_PASSWORD", "pass")
+        .withEnv("SUDO_ACCESS", "true")
+        .withExposedPorts(2222)
+
+    @BeforeTest
+    fun setup() {
+        sftpContainer.start()
+    }
+
+    @AfterTest
+    fun teardown() {
+        sftpContainer.stop()
+    }
+
+    @Test
+    fun test() {
+        val host = Host(
+            name = sftpContainer.containerName,
+            protocol = Protocol.SSH,
+            host = "127.0.0.1",
+            port = sftpContainer.getMappedPort(2222),
+            username = "foo",
+            authentication = Authentication.No.copy(type = AuthenticationType.Password, password = "pass"),
+        )
+
+        val client = SshClients.openClient(host)
+        val session = SshClients.openSession(host, client)
+        assertTrue(session.isOpen)
+
+
+        val fileSystem = DefaultSftpClientFactory.INSTANCE.createSftpFileSystem(session)
+        for (path in Files.list(fileSystem.rootDirectories.first())) {
+            println(path)
+        }
+    }
+}