Make default directory name separate CamelCase with dashes

[sschuberth]

Just as minor idea for improving the default directory name created at

SDK/tools/tmpl.py

Line 30 in 9340fb4

dest_dir = os.path.join(dest_dir, "keypirinha-" + package_name.lower())

How about converting CamelCase to dash-separations, so that

kptmpl package FooBar

would create a directory "keypirinha-foo-bar" instead of "keypirinha-foobar"? That could be done with a Regex replacement similar to this Kotlin code that I wrote.