feat: initial open-source project structure

Agent Skill for searching and downloading torrents via TorrentClaw.
Includes SKILL.md with OpenClaw metadata, bash scripts for torrent
client detection, CONTRIBUTING.md, CHANGELOG.md, CI/CD with GitHub
Actions (shellcheck + conventional commits), lefthook git hooks,
Makefile, and .editorconfig.

.editorconfig

@@ -0,0 +1,19 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.sh]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab