Runtime API for checking validation outputs (#1842)
* annoying whitespaces * update guide Add `CheckValidationOutputs` runtime api and also change the candidate-validation stuff * promote ValidationOutputs to global primitives i.e. move it from node specific primitives to global v1 primitives. This will be needed when we share it later in the runtime inclusion module * refactor acceptance checks in the inclusion module factor out the common code to share it during the block inclusion and for the forthcoming CheckValidationOutputs runtime api. Also note that the acceptance criteria was updated to incorporate checks that exist now in candidate-validation * plumb the runtime api outside * extract validation_data from ValidationOutputs * use runtime-api to check validation outputs apart from that refactor, update docs and tidy a bit * Update the maxium code size This is to fix a test that performs an upgrade.