docs: Sphinx manuel joueur/admin/dev + build HTML

Manuel complet DauphinCraft v0.1.0 : 14 pages RST (joueur, admin,
dev, annexes), conf.py rtd-theme, Makefile/make.bat, build HTML propre.

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

docs/_build/html/_static/documentation_options.js

@@ -0,0 +1,13 @@
+const DOCUMENTATION_OPTIONS = {
+    VERSION: '0.1.0',
+    LANGUAGE: 'fr',
+    COLLAPSE_INDEX: false,
+    BUILDER: 'html',
+    FILE_SUFFIX: '.html',
+    LINK_SUFFIX: '.html',
+    HAS_SOURCE: true,
+    SOURCELINK_SUFFIX: '.txt',
+    NAVIGATION_WITH_KEYS: false,
+    SHOW_SEARCH_SUMMARY: true,
+    ENABLE_SEARCH_SHORTCUTS: true,
+};