[zelos] Dynamic output shapes

[samelhusseini]

Describe the bug

We want to have output shapes that can stretch the entire height of the block. This width of the connection can be static, but for a smooth curve we might also want to make that depend on the height.

Proposal

Use an isDynamic flag on connection shapes to determine whether or not a shape is static or dynamic. Use a function for making a path that takes in a height and returns the appropriate path.
When drawing the shape, check whether the path is a function and if so, call it with the height of the row.

[samelhusseini]

Done.