For the header component - query relevant logo image of the blog

[copypasteov]

Blog logo image has to be connected to the blog object that is being queried - the users blog

Describe the solution you'd like

• first perform check if the b,log is a team blog and if there is a .favicon is yes - use it
• if no favicon, then check for publication logo
• if no logo then query author image

Additional context
Requires a slight addition to the already existing blog info query

• Implementation has been implemented in the other app versions so that implementation is to be followed and maintained

Must not be confused with site favicon which is sitewide and should be implemented in the app.component.ts

• can be done in this issue or another but has to be documented either way
• must be applied on the blog post card a s a whole