As a guy who fills in blob fields, I want the GUI to offer a button so that I can specify a Candid value there and it gets automatically encoded

[ggreif]

Is your feature request related to a problem? Please describe.
I'm always frustrated when I have to use a different tool to candid-encode complex values (e.g. into a vec { ... }), and paste them into a blob form byte-by-byte.

Describe the solution you'd like
Instead I'd like to see a GUI drop-down button so that

• by default presents the current vec nat8 interface
• I can textually enter a Candid value and it would get encoded to a blob.
• I can specify a Candid type and I'd get a form for that type (on the side)
• I can specify the blob as hex-encoded text
• include the blob directly from a file.

Dually blob outputs could have a decode button

• with (similar) dual options

Describe alternatives you've considered
Candid encoding a blob manually is hard and error-prone.