feat: Remove Clone trait from ExtnMessage

[satlead]

What

Removes the Clone trait from Extn Messages

Why

Based on a cargo bloat Run ExtnMessage and its enums have the most size in the executable. Major contributor for this is the Clone Trait

How

Given Serialization and Deserialization is already inherent in the ExtnMessage clone trait is redundant.

Test

Run Cargo bloat again and validate the results with and without these changes

Checklist

• I have self-reviewed this PR
• I have added tests that prove the feature works or the fix is effective

[github-actions]

Package	Line Rate	Health
core.main.src.firebolt	1%	❌
core.main.src.firebolt.handlers	2%	❌
core.main.src.bootstrap	0%	❌
core.main.src	0%	❌
core.sdk.src.extn	90%	✔
core.main.src.bootstrap.manifest	0%	❌
device.thunder.src.bootstrap	0%	❌
device.thunder_ripple_sdk.src.processors.events	0%	❌
distributor.general.src	2%	❌
core.main.src.utils	13%	❌
core.main.src.state	19%	❌
core.sdk.src.api.distributor	84%	✔
device.thunder.src	0%	❌
openrpc_validator.src	90%	✔
core.sdk.src.api.observability	48%	➖
core.sdk.src.api.device	59%	➖
core.sdk.src.extn.client	91%	✔
core.sdk.src.extn.ffi	80%	✔
core.sdk.src.utils	53%	➖
device.thunder_ripple_sdk.src.bootstrap	0%	❌
device.thunder_ripple_sdk.src.client	79%	✔
core.main.src.state.cap	44%	➖
core.sdk.src.api	66%	➖
core.sdk.src.api.manifest	55%	➖
core.tdk.src.gateway	100%	✔
core.launcher.src	0%	❌
device.thunder_ripple_sdk.src.events	4%	❌
core.main.src.processor	0%	❌
core.sdk.src.api.gateway	48%	➖
core.main.src.service.apps	43%	➖
core.main.src.service	31%	❌
core.sdk.src.framework	77%	✔
core.main.src.processor.storage	0%	❌
device.thunder_ripple_sdk.src	16%	❌
core.main.src.service.extn	38%	➖
core.tdk.src.utils	0%	❌
core.launcher.src.manager	7%	❌
core.sdk.src.api.firebolt	50%	➖
device.thunder_ripple_sdk.src.processors	4%	❌
core.main.src.bootstrap.extn	0%	❌
Summary	35% (11330 / 32510)	➖

Minimum allowed line rate is 33%

[CLAassistant]

All committers have signed the CLA.