Add NavigationDrawer

[DigitalSeneca]

fixes #101

Drawer closed	Drawer opened

[DigitalSeneca]

@epou After requesting your review, I noticed 1 error:

• The message that appears after copying to clipboard is below the dashboard so not really visible

The rest of the pull request seems to be working as expected, I'll get to fix this detected error

[epou]

Could you reduce the space between the ListTile icons and their corresponding text labels (title) so they are equally spaced? (see the red line in the image attached). I see the text too far from the icons.

[DigitalSeneca]

Could you reduce the space between the ListTile icons and their corresponding text labels (title) so they are equally spaced? (see the red line in the image attached). I see the text too far from the icons.

Is this good enough? I set minLeadingWidth: 0 If we still want less space, I can rework the custom widget to build it using a different method

[epou]

Is this good enough? I set minLeadingWidth: 0 If we still want less space, I can rework the custom widget to build it using a different method

Now it's perfect :)