Initial global Obsidian config

Shared config extracted from obsidian-config; vault-specific files (bookmarks.json, daily-notes.json) excluded.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Claude-Session: https://claude.ai/code/session_01ASYabtTgxSxJPjxPmBK9PJ

types.json

@@ -0,0 +1,8 @@
+{
+  "types": {
+    "aliases": "aliases",
+    "cssclasses": "multitext",
+    "tags": "tags",
+    "previous": "text"
+  }
+}