Add initial project configuration files and structure

- Create .gitattributes to manage large file storage for various asset types.
- Add .gitignore to exclude unnecessary files and directories from version control.
- Initialize .obsidian/app.json with settings for the Obsidian application.
- Create .obsidian/snippets/omoolab.css for custom styling in Obsidian.
- Add OMOOSPACE.md for project metadata.
- Initialize README.md with project title.

OMOOSPACE.md

@@ -0,0 +1,3 @@
+---
+brief: An omoospace project
+---