Add serializer design notes

[cppalliance-bot]

An automated preview of the documentation is available at https://79.http-proto.prtest.cppalliance.org/libs/http_proto/doc/html/index.html

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.37%. Comparing base (1bbbd5c) to head (9d6c39a).

Additional details and impacted files

[](https://app.codecov.io/gh/cppalliance/http_proto/pull/79?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) ```diff @@ Coverage Diff @@ ## develop #79 +/- ## ======================================== Coverage 89.37% 89.37% ======================================== Files 77 77 Lines 4348 4348 ======================================== Hits 3886 3886 Misses 462 462 ``` ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/cppalliance/http_proto/pull/79?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/cppalliance/http_proto/pull/79?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance). Last update [1bbbd5c...9d6c39a](https://app.codecov.io/gh/cppalliance/http_proto/pull/79?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance).

[cppalliance-bot]

GCOVR code coverage report https://79.http-proto.prtest.cppalliance.org/gcovr/index.html
LCOV code coverage report https://79.http-proto.prtest.cppalliance.org/genhtml/index.html Coverage Diff https://79.http-proto.prtest.cppalliance.org/gcovr/coverage_diff.txt

[cppalliance-bot]

An automated preview of the documentation is available at https://79.http-proto.prtest.cppalliance.org/libs/http_proto/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://79.http-proto.prtest.cppalliance.org/libs/http_proto/doc/html/index.html

[cppalliance-bot]

GCOVR code coverage report https://79.http-proto.prtest.cppalliance.org/gcovr/index.html
LCOV code coverage report https://79.http-proto.prtest.cppalliance.org/genhtml/index.html Coverage Diff https://79.http-proto.prtest.cppalliance.org/gcovr/coverage_diff.txt

[cppalliance-bot]

GCOVR code coverage report https://79.http-proto.prtest.cppalliance.org/gcovr/index.html
LCOV code coverage report https://79.http-proto.prtest.cppalliance.org/genhtml/index.html Coverage Diff https://79.http-proto.prtest.cppalliance.org/gcovr/coverage_diff.txt

[cppalliance-bot]

An automated preview of the documentation is available at https://79.http-proto.prtest.cppalliance.org/libs/http_proto/doc/html/index.html

[cppalliance-bot]

GCOVR code coverage report https://79.http-proto.prtest.cppalliance.org/gcovr/index.html
LCOV code coverage report https://79.http-proto.prtest.cppalliance.org/genhtml/index.html Coverage Diff https://79.http-proto.prtest.cppalliance.org/gcovr/coverage_diff.txt

[cppalliance-bot]

An automated preview of the documentation is available at https://79.http-proto.prtest.cppalliance.org/libs/http_proto/doc/html/index.html

[cppalliance-bot]

GCOVR code coverage report https://79.http-proto.prtest.cppalliance.org/gcovr/index.html
LCOV code coverage report https://79.http-proto.prtest.cppalliance.org/genhtml/index.html Coverage Diff https://79.http-proto.prtest.cppalliance.org/gcovr/coverage_diff.txt