app/wsapi: make WSPathComponent inherit object
app/wsapi: make WSPathComponent inherit object

Later we create subclass of WSPathComponent so that make super() work.
app/wsapi: super().__init__()

Signed-off-by: Isaku Yamahata <4b3abd66323411eeceff090ab3754dd766fc4b25@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

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