Drop StaticArrays by using StaticArraysCore

[ChrisRackauckas]

Requires JuliaArrays/ArrayInterface.jl#325

@time_imports using SciMLBase
    10.4 ms    ┌ MacroTools
     19.0 ms  ┌ ZygoteRules
      3.8 ms  ┌ Compat
      1.5 ms    ┌ Adapt
      3.7 ms    ┌ ArrayInterfaceCore
      2.0 ms    ┌ StaticArraysCore
      9.7 ms  ┌ ArrayInterfaceStaticArraysCore
    123.1 ms  ┌ FillArrays
      5.0 ms  ┌ DocStringExtensions
     18.2 ms  ┌ RecipesBase
     51.3 ms  ┌ ChainRulesCore
      4.0 ms  ┌ GPUArraysCore
    292.7 ms  RecursiveArrayTools

Compare that to #213

julia> @time_imports using RecursiveArrayTools
28.2 ms ┌ MacroTools
53.8 ms ┌ ZygoteRules
3.2 ms ┌ Compat
503.4 ms ┌ FillArrays
1715.4 ms ┌ StaticArrays
69.1 ms ┌ Preferences
103.9 ms ┌ JLLWrappers
500.3 ms ┌ LLVMExtra_jll
7.0 ms ┌ CEnum
265.1 ms ┌ LLVM
3.1 ms ┌ Adapt
2544.7 ms ┌ GPUArrays
16.1 ms ┌ DocStringExtensions
3.1 ms ┌ IfElse
265.8 ms ┌ RecipesBase
175.6 ms ┌ Static
8.1 ms ┌ ArrayInterfaceCore
222.9 ms ┌ ArrayInterface
3.6 ms ┌ ArrayInterfaceStaticArrays
175.3 ms ┌ ChainRulesCore
6228.5 ms RecursiveArrayTools