[frontend] create PoucaAgua MainView With Router

[ravellys]

What

You must create a MainView (/home), this MainView must have the routers:

1. /evapotranspiration
2. /irrigation
3. /percent-wetted
4. /percent-shaded
5. /crop-coefficients
6. /system-design

DoD

1. we need the mainview with a div for all components
2. we need to have the empty routes
3. we need create the empty pages