[WIP] Add function to update token metadata

[21e8]

Hi,

I myself have needed this function due to some errors before uploading.
It was only present as part of the minting process so I thought I should pull it out.

[jarry-xiao]

Approved thanks

[jameslin101]

I tried running this and it ends up setting the seller fee basis points to 0.. any ideas?

[21e8]

That would explain what I observed... will hold off with this, seems to be missing something

[syabro]

@21e8 update_metadata_accounts in rust accepts data: Option<Data> that has pub seller_fee_basis_points: u16

Maybe it's the issue...

[21e8]

@syabro do you have a solution proposal? I am currently caught up in other things

[syabro]

@21e8 I think it's fixed in #17

[21e8]

seems that #19 implements this with fixed functionality so gonna close again