[1.3] Potential codesize reduction using Template for EVSE SDK

[jamesharrow]

Reproduction steps

Per PR review on #30857

@bzbarsky-apple suggested that potentially using a template to only instantiate code if the feature / optional support of attributes and commands code help reduce implementators code size.

Specifically there are some optional features in EVSE (such as charging PREFerences) which could inflate codesize for manufacturers not wanting to support that.

Bug prevalence

N/A

GitHub hash of the SDK that was being used

N/A see PR #30857

Platform

core

Platform Version(s)

1.3

Type

Core SDK Performance Improvement

Anything else?

No response