Allow rules to be defined via yaml arrays

[akhundMurad]

Right now, rules are written with this pattern:

rule:
    id: rule_1
    ...

rule:
    id: rule_2
    ...

However, a better way is this:

rules:
    - id: rule_1
       ...
    
    - id: rule_2
       ...

[llalyeva]

Hey @akhundMurad , I'm already working on this issue :)