Add documentation to every function and automatic doc html building (#6)

Reviewed-on: Rubydragon/MetagraphOptimization.jl#6
Co-authored-by: Anton Reinhard <anton.reinhard@proton.me>
Co-committed-by: Anton Reinhard <anton.reinhard@proton.me>

src/task/print.jl

@@ -1,3 +1,8 @@
+"""
+    show(io::IO, t::FusedComputeTask)
+    
+Print a string representation of the fused compute task to io.
+"""
 function show(io::IO, t::FusedComputeTask)
     (T1, T2) = get_types(t)
     return print(io, "ComputeFuse(", T1(), ", ", T2(), ")")