rename frontends to experimental-frontends to make more explicit that those are experimental and not recommended for usage, as discussed in the last meeting
the recommended frontend is defining the FCircuit with arkworks
rename FoldingSchemes trait to IVC trait
rename upper_bound_ccs to compute_concrete_ccs to describe better the method logic
thanks to @tremblaythibaultl for pointing out that the method name was not accurate
[WIP]
frontendstoexperimental-frontendsto make more explicit that those are experimental and not recommended for usage, as discussed in the last meetingFoldingSchemestrait toIVCtraitupper_bound_ccstocompute_concrete_ccsto describe better the method logic