node syncing and weak subjectivity

[chirag-parmar]

• Adds a new section to the consensus layer that addresses weak subjectivity

TODO:

• add links to resources for weak subjectivity
• add the section to the nav bar
• remove mentions of ETH1 from the doc
• make a clearer distinction b\w sync strategies of the EL and the CL
• highlight the role of finality in weak subjectivity

[raxhvl]

This is well written. I have left my review. Thanks!

[taxmeifyoucan]

@chirag-parmar Ping on this one, are you planning to continue?

[chirag-parmar]

@taxmeifyoucan yes, apologies it got super busy the past few months. I'll wrap this up by the end of the week

[taxmeifyoucan]

Thank you Chirag, this looks great!