[#9] Implement hosting package

Package defines interface for host management and provides implementation
for docker host (local or remote). Other hosts can be added via plugins.

Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>

src/neofs_testlib/hosting/config.py

@@ -0,0 +1,70 @@
+from dataclasses import dataclass, field, fields
+from typing import Any
+
+
+@dataclass
+class ParsedAttributes:
+    """Base class for data structures representing parsed attributes from configs."""
+
+    @classmethod
+    def parse(cls, attributes: dict[str, Any]):
+        # Pick attributes supported by the class
+        field_names = set(field.name for field in fields(cls))
+        supported_attributes = {
+            key: value for key, value in attributes.items() if key in field_names
+        }
+        return cls(**supported_attributes)
+
+
+@dataclass
+class CLIConfig:
+    """Describes CLI tool on some host.
+
+    Attributes:
+        name: Name of the tool.
+        exec_path: Path to executable file of the tool.
+        attributes: Dict with extra information about the tool.
+    """
+
+    name: str
+    exec_path: str
+    attributes: dict[str, str] = field(default_factory=dict)
+
+
+@dataclass
+class ServiceConfig:
+    """Describes neoFS service on some host.
+
+    Attributes:
+        name: Name of the service that uniquely identifies it across all hosts.
+        attributes: Dict with extra information about the service. For example, we can store
+            name of docker container (or name of systemd service), endpoints, path to wallet,
+            path to configuration file, etc.
+    """
+
+    name: str
+    attributes: dict[str, str] = field(default_factory=dict)
+
+
+@dataclass
+class HostConfig:
+    """Describes machine that hosts neoFS services.
+
+    Attributes:
+        plugin_name: Name of plugin that should be used to manage the host.
+        address: Address of the machine (IP or DNS name).
+        services: List of services hosted on the machine.
+        clis: List of CLI tools available on the machine.
+        attributes: Dict with extra information about the host. For example, we can store
+            connection parameters in this dict.
+    """
+
+    plugin_name: str
+    address: str
+    services: list[ServiceConfig] = field(default_factory=list)
+    clis: list[CLIConfig] = field(default_factory=list)
+    attributes: dict[str, str] = field(default_factory=dict)
+
+    def __post_init__(self) -> None:
+        self.services = [ServiceConfig(**service) for service in self.services or []]
+        self.clis = [CLIConfig(**cli) for cli in self.clis or []]