Compact proof. (#295)

* compact, need to be made optional and look into/compress child trie
roots/state.

* proto with child trie support

* Missing set_offchain_storage overload.

* right name

* Ignore offchain indexing in validation function.

* patch trie-db

* decompress from iter

* use compressed proof

* remove wasm blob from proof (no inject plugged yet)

* change lock

* update trie

* change in toml

* Revert "change in toml"

This reverts commit aa5c568.

* use patch to branches

* i

* i:wq

* switch branch

* ii

* ok, needed to patch the runtime by putting substrate patch in polkadot
project.

* test passing with this conf

* actual lazy code fetch

* patch issue

* Code reorg

* restore commented tests.

* update deps.

* remove polka patch

* fixes

* remove patch

* revert cargo.lock

* cargo update -p sp-trie polkadot-service

* fix collator test (using parent state root).

* Update pallets/parachain-system/src/validate_block/implementation.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Remove encode_witness test function.

* Update pallets/parachain-system/src/validate_block/implementation.rs

* Fix compilation

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>