`specialize` does not seem to be supported in OptimizationFunction

[Zentrik]

The docs for OptimizationFunction say there is a option specialize, https://github.com/SciML/SciMLBase.jl/blob/e9caa29e90bf46d8a00dfec03d78158eb0762566/src/scimlfunctions.jl#L2085-L2087

## specialize: Controlling Compilation and Specialization

For more details on this argument, see the ODEFunction documentation.

However, the definition of OptimizationFunction and AbstractOptimizationFunction don't include this field:
https://github.com/SciML/SciMLBase.jl/blob/e9caa29e90bf46d8a00dfec03d78158eb0762566/src/SciMLBase.jl#L590

abstract type AbstractOptimizationFunction{iip} <: AbstractSciMLFunction{iip} end

https://github.com/SciML/SciMLBase.jl/blob/e9caa29e90bf46d8a00dfec03d78158eb0762566/src/scimlfunctions.jl#L2093-L2096

struct OptimizationFunction{iip, AD, F, G, H, HV, C, CJ, CH, LH, HP, CJP, CHP, LHP, S, S2,
                            O, HCV,
                            CJCV,
                            CHCV, LHCV, EX, CEX, SYS} <: AbstractOptimizationFunction{iip}

[ChrisRackauckas]

Yes, it would be good to setup the specialization mechanism in the OptimizationFunction lowering process. @Vaibhavdixit02 we should chat on this.