feat(octez): store bootstrap accounts in protocol parameters

[huancheng-trili]

Context

Part of JSTZ-247.
JSTZ-247

In preparation for #721.

Description

Store bootstrap accounts in protocol parameters so that they can be retrieved later.

Manually testing the PR

• Unit testing: added one test

[codecov]

Codecov Report

Attention: Patch coverage is 95.23810% with 1 line in your changes missing coverage. Please review.

Project coverage is 47.24%. Comparing base (fd80348) to head (3dadcd4).

Files with missing lines	Patch %	Lines
crates/octez/src/async/protocol.rs	95.23%	0 Missing and 1 partial ⚠️

Files with missing lines	Coverage Δ
crates/octez/src/async/bootstrap.rs	90.47% <ø> (ø)
crates/octez/src/async/protocol.rs	94.47% <95.23%> (+0.15%)	⬆️

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