* Print pods from SignedPodBuilder
* Add additional print to test printing SignedPodBuilder
* Mock-prove and print MainPod
* Implement ToFields for custom predicates and dependencies
* Test: print serialization of a recursive batch
* Rearrange serialization of CustomPredicate so args_len is always in the same position
* Serialize predicates with first entry nonzero to avoid collision with padding
* Off by one error in ethdos test BatchSelf(2)
* cargo fmt
* not a typo
* Typos, trying again
* add comments detailing logic, migrate middleware::custom::tests to frontend::custom
* simplify custom predicate's frontend interfaces, making it less verbose to define Statement Template arguments
The main idea is that when defining the arguments at a statement
template, it can be done from 3 different inputs:
i. `(&str, literal)`: this is to set a POD and a field, ie. `(POD, literal("field")`)
ii. `(&str, &str)`: this is to define a origin-key wildcard pair, ie. `(src_origin, src_dest)`
iii. `Value`: this is to define a literal value, ie. `0`
* wip
* prototype custom predicates 1b
* feat: implement custom pred recursion
* files reorg, add github CI for rustfmt checks
* start sparsemerkletree. impl add_leaf method, initial Leaf & Intermediate types with methods
* mt: add hash computation of all the nodes in the tree, add method to print the tree to visualize it as a graphviz
* mt: add (till the leaf) method which is used by get,contains,prove methods
* mt: add verify (of inclusion) method
* mt: update 'down' method to reuse siblings, update get,contains,prove methods (the three use 'down' under the hood)
* Add nonexistence proofs and iterator
* Add iterator test
* migrate usage of old merkletree to the new merkletree impl in POD2 code
---------
Co-authored-by: Eduard S. <eduardsanou@posteo.net>
Co-authored-by: Ahmad <root@ahmadafuni.com>
* Experiment with statement & op enums
* Clean-up & fixes
* More clean-up
* Add argument length checks
* More clean-up
* Place statement and operation logic in submodules
