Change Sort to have two static constructors

[roxblnfk]

Add Sort::any() and Sort::only() methods instead of constuctor

Q	A
Breaks BC?	✔️
Fixed issues	decide #67

todo:

• Fix documentation
• Fix other repositories
  • app-api Use static methods to create a Sort object app-api#38
  • yii-cycle Use static methods to create a Sort object yii-cycle#93
  • yii-dataview Use static methods to create a Sort object yii-dataview#42
  • yii-demo Change Sort to have two static constructors demo#231

[samdark]

👍