[G2M] side-navbar - create side-navbar component

[kc-leung]

• Added side-navbar component
• Added side-navbar header, menu, item & footer component
• Added new spacing in tailwindConfig 25px & 250px
• Added new font family in tailwindConfig font-rc ( radio canada )

PD: This is only the default simple version to update it for COX dashboard changes. Dropdown & Nested features will be added in future iteration.

FIGMA: https://www.figma.com/file/Tzb6u7o8fKixoFS9yXkdj7/Lumen-Components?node-id=368%3A38956

[github-actions[bot]]

📚 Storybook preview (updated to 59cee7c7875e1a357dfd931342d8a6c6af56c1d4)