generate precompilation statements (#88)

* generate precompilation statements

* Update precompile.jl

add precompile statements generated by `@snoopc`

* Update precompile.jl

* Update precompile.jl

Author: Nayoth

src/InMemoryDatasets.jl

@@ -194,10 +194,10 @@ include("missings/missings.jl")
 # ds stat
 include("stat/ds_stat.jl")
 # precompile
-# include("precompile/precompile.jl")
+include("precompile/precompile.jl")
 include("precompile/warmup.jl")
 include("precompile/create_sysimage.jl")
-# _precompile_()
+_precompile()
 
 function __init__()
    if Threads.nthreads() == 1