fix: Unknown SDO services

[SebastianKoopmann]

Change SDO service length check and reaction based on CoE state machine within ETG1000.6.
(Also included: #194, #197 and #198)

[CLAassistant]

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❌ whoTBecker
❌ ule29147
❌ SebastianKoopmann
❌ whoMBadura
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