LX-D02 BLE thermal printer: PC, Windows printer, Home Assistant

- printer.py: protocol with flow control (pause / resend / done)
- lxd02.py: print text or pictures from the command line
- windows/: POS-58 driver + local ESC/POS server = a regular Windows printer,
  Explorer menu for pictures
- custom_components/lxd02: Home Assistant integration with a persistent queue

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

custom_components/lxd02/manifest.json

@@ -0,0 +1,10 @@
+{
+  "domain": "lxd02",
+  "name": "LX-D02 Thermal Printer",
+  "version": "0.2.0",
+  "documentation": "https://git.08h.ru/alex/lx-d02",
+  "dependencies": ["bluetooth"],
+  "requirements": [],
+  "codeowners": [],
+  "iot_class": "local_push"
+}