Metadata V15: Enrich extrinsic type info for decoding (#14123)

* metadata-ir: Add extrinsic type info to decode address, call, sig

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame-metadata: Point to unreleased branch

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* metadata-ir: Include addrees, call, signature in V15 conversion

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* metadata-ir: Include extra ty

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* construct_runtime: Extract address,call,sig,extra ty from tx type

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame/tests: Check metadata populates xt types correctly

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* metadata-ir/tests: Add extra fields on ExtrinsicMetadataIR

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* primitives/traits: Expand the `Extrinsic::SignaturePayload`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* primitives: Adjust to new `Extrinsic` associated types

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame/metadata: Simplify metadata generation

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame/example: Adjust to new interface

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame/tests: Adjust `extrinsic_metadata_ir_types`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Revert the additional Extrinsic' associated types

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* primitives: Add `SignaturePayload` marker trait

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* primitives: Implement SignaturePayload for empty tuple

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Adjust to new SignaturePayload trait

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* tests: Adjust `extrinsic_metadata_ir_types` to new interface

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame/support: Adjust pallet test

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* frame: Add Extrinsic length prefix to the metadata

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* primitives: Populate `ExtrinsicMetadataIR` with `len_ty`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Update primitives/runtime/src/traits.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Apply cargo fmt

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* v15: Remove len type of the extrinsic

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* cargo: Update frame-metadata

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

---------

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: parity-processbot <>