feat(handler): add support for Autel ECC firmwares.

[qkaiser]

Adaptation of @sector7-nl script to decrypt Autel charger firmwares.

Samples available there:

• https://s3.eu-central-1.amazonaws.com/default.eneprodeu/firmware/d53de2c661d1f311f8f4b1e11f02c345-Firmware_ECC0101_V1.36.00.aut
• https://s3.eu-central-1.amazonaws.com/default.eneprodeu/firmware/904d461c4f0abe2a19748f4ad20a30b2-Firmware_ECC0101_V1.35.00.aut
• https://s3.eu-central-1.amazonaws.com/default.eneprodeu/firmware/f3c0a9d31163e0252d71187321dec4fa-Firmware_ECC0101_V1.32.00.aut

~I'll create a synthetic sample and push it in integration tests.~ DONE