feat: add compress and extract tools

Implements SYNO.FileStation.Compress (v3) and SYNO.FileStation.Extract (v2)
with async polling identical to copy/move. Includes input validation for
compress (level, mode, format, empty paths) and 11 new unit tests.
Bumps version to 0.2.0.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

uv.lock

@@ -362,7 +362,7 @@ wheels = [
 
 [[package]]
 name = "mcp-synology-filestation"
-version = "0.1.0"
+version = "0.2.0"
 source = { editable = "." }
 dependencies = [
     { name = "click" },