chore: add project configs

- Add CI workflows (format, lint, typecheck)
- Add quality workflow
- Add luarocks publishing workflow
- Add pre-commit configuration
- Add issue templates (bug report, feature request)
- Add .editorconfig, .gitignore, .luarc.json
- Add selene.toml and vim.toml for linting
- Add luarocks rockspec
- Rename .stylua.toml to stylua.toml

vim.toml

@@ -0,0 +1,30 @@
+[selene]
+base = "lua51"
+name = "vim"
+
+[vim]
+any = true
+
+[jit]
+any = true
+
+[assert]
+any = true
+
+[describe]
+any = true
+
+[it]
+any = true
+
+[before_each]
+any = true
+
+[after_each]
+any = true
+
+[spy]
+any = true
+
+[stub]
+any = true