Remove usages of variable length arrays

[Joshua-Anderson]

Originating Project/Creator
Affected Component
Affected Architectures(s)
Related Issue(s)
Has Unit Tests (y/n)
Builds Without Errors (y/n)
Unit Tests Pass (y/n)	y
Documentation Included (y/n)

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Change Description

Remove usages of variable length arrays

Rationale

Variable length arrays are not part of the C++ standard and present a risk of
stack overflows in the case of an codeing error. Replace variable length arrays
with a statically sized array large enough to handle the maximum possible input.

[LeStarch]

We should convert the "size write" of buffer logger to use our standard serialization techniques (e.g. use an Fw::ExternalBuffer" and serialize the size....but this is good for now.