Split extended NFC APDUs into smaller seph messages

[yrichard-ledger]

Description

This PR splits extended NFC APDUs (>255 bytes) into smaller chunks that fit into internal bolos buffers when sending and receiving them over SEPH.
To perform the split we use the existing ledger protocol, like we do on BLE and USB.

Support for extended size APDUs is required for FIDO2 on NFC, with APDU sizes that can exceed 700 bytes.

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• Other (for changes that might not fit in any category)

Breaking changes

The payload format of NFC_CAPDU and NFC_RAPDU seph messages is modified and it now includes a ledger protocol header

Additional comments

Release of this change must be synchronized with the release of the corresponding MCU firmware.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.47%. Comparing base (2c7513a) to head (1546ce0).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #665   +/-   ##
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  Coverage   60.47%   60.47%           
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  Files          12       12           
  Lines        1723     1723           
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  Hits         1042     1042           
  Misses        681      681           

Flag	Coverage Δ
unittests	60.47% <ø> (ø)

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