templatekw: add default implementation of _hybrid.gen
This is convenient for new template keyword, which doesn't need to support
the legacy list hack (provided by _showlist()), but still wants to have
a string representation.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true