577a3e74c8 test: Add check for return type in `HasToBytes` concept (yuvicc)
1ad551281a kernel: Add Block Header serialization method (yuvicc)
86662623ec Add `SpanWriter` class for zero-allocation stream writing (yuvicc)
Pull request description:
This adds serialization for `btck_BlockHeader` API. Also, updated the `CheckHandle` to compare the byte content instead of size.
The changes here is done in two commits. First commit adds the `SpanWriter` class and next one moves the block header serialization to `SpanWriter`. See commit message for more details.
Follow-up to #33822 .
ACKs for top commit:
stickies-v:
re-ACK 577a3e74c8
alexanderwiederin:
ACK 577a3e74c8
theStack:
Code-review ACK 577a3e74c8
w0xlt:
ACK 577a3e74c8
Tree-SHA512: 1eda5b204588ccb23e9357f68c5529474e7d248736a371c47d8db71ba6ca95e121869514478ad7a519d190e4c30725f64fd1ef4dd9f97d2627dc4441e51458e0
44ac0c32b9