Add independent classes from ssh plugin

scm-core/src/main/java/sonia/scm/protocolcommand/CommandContext.java

@@ -0,0 +1,20 @@
+package sonia.scm.protocolcommand;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+
+@Getter
+@AllArgsConstructor
+public class CommandContext {
+
+  private String command;
+  private String[] args;
+
+  private InputStream inputStream;
+  private OutputStream outputStream;
+  private OutputStream errorStream;
+
+}

scm-core/src/main/java/sonia/scm/protocolcommand/CommandParser.java

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+package sonia.scm.protocolcommand;
+
+@FunctionalInterface
+public interface CommandParser {
+
+  String[] parse(String command);
+
+}

scm-core/src/main/java/sonia/scm/protocolcommand/RepositoryContext.java

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+package sonia.scm.protocolcommand;
+
+import sonia.scm.repository.Repository;
+
+import java.nio.file.Path;
+
+public class RepositoryContext {
+  private Repository repository;
+  private Path directory;
+
+  public RepositoryContext(Repository repository, Path directory) {
+    this.repository = repository;
+    this.directory = directory;
+  }
+
+  public Repository getRepository() {
+    return repository;
+  }
+
+  public Path getDirectory() {
+    return directory;
+  }
+}

scm-core/src/main/java/sonia/scm/protocolcommand/RepositoryContextResolver.java

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+package sonia.scm.protocolcommand;
+
+import sonia.scm.plugin.ExtensionPoint;
+
+@FunctionalInterface
+@ExtensionPoint
+public interface RepositoryContextResolver {
+
+  RepositoryContext resolve(String[] args);
+
+}

scm-core/src/main/java/sonia/scm/protocolcommand/ScmSshProtocol.java

@@ -0,0 +1,9 @@
+package sonia.scm.protocolcommand;
+
+import java.io.IOException;
+
+public interface ScmSshProtocol {
+
+  void handle(CommandContext context, RepositoryContext repositoryContext) throws IOException;
+
+}