May/must and 21434-fashioned excel export

• and/or are now replaced by may/must so that their semantics are clearer in all situations (attacker may choose, or attacker must overcome both paths
• a big table can be exported that looks like the combination of all ISO/SAE21434-annex-tables
• Remote Update 1 and 2: the attack feasibility levels were still worded like speaking about attack effort ("High" was leading to a low risk). We flipped it so that it fits the attack feasibility semantics