Add a scroll to top icon / button for longer pages

[samplelittlered]

Describe the solution you'd like
For long blog posts there should be a scroll to pop button / icon that returns the user to the beginning of the page

• for this app version primeicons should be used
• applied in the app.component should be fine

[esthersoftwaredev]

@DongreJaipal can you also comment here so I can assign this completed issue to you

[DongreJaipal]

.take