Create `function_param_patterns` mapper
Create `function_param_patterns` mapper

Summary: Abstract the mapper for each non-rest function argument into its own mapper.

Reviewed By: gabelevi

Differential Revision: D8801261

fbshipit-source-id: c94d7dc757d069b3817eec1bbd9ee551182f3aa1

samwgoldman/flow,jamesgpearce/flow,nmote/flow,gabelevi/flow,claudiopro/flow,nmote/flow,mroch/flow,nmote/flow,mroch/flow,gabelevi/flow,popham/flow,claudiopro/flow,samwgoldman/flow,popham/flow,claudiopro/flow,JonathanUsername/flow,jamesgpearce/flow,gabelevi/flow,facebook/flow,gabelevi/flow,gabelevi/flow,facebook/flow,AgentME/flow,samwgoldman/flow,claudiopro/flow,JonathanUsername/flow,gabelevi/flow,AgentME/flow,popham/flow,mroch/flow,popham/flow,samwgoldman/flow,jamesgpearce/flow,JonathanUsername/flow,jamesgpearce/flow,JonathanUsername/flow,samwgoldman/flow,jamesgpearce/flow,nmote/flow,mroch/flow,mroch/flow,facebook/flow,nmote/flow,nmote/flow,AgentME/flow,facebook/flow,gabelevi/flow,nmote/flow,facebook/flow,mroch/flow,popham/flow,AgentME/flow,samwgoldman/flow,jamesgpearce/flow,samwgoldman/flow,claudiopro/flow,popham/flow,facebook/flow,JonathanUsername/flow,facebook/flow,JonathanUsername/flow,jamesgpearce/flow,AgentME/flow,mroch/flow,popham/flow,JonathanUsername/flow