feat: Add Ses lambda event support to Parser utility

[ran-isenberg]

This schema is currently supported in the validator utility.
This issue will add the schema to the parser utility.
Please note that there's no need for an envelope in this case, just a schema class.

[igorlg]

Can this issue be closed? #214 seems to have been merged

[heitorlessa]

Yes it can @igorlg i thought I did ;) thanks for flagging it