Add type hierarchy to docs

Author: charleskawczynski

docs/src/dev/types.md

@@ -2,4 +2,22 @@
 
 In this section, we print out the type hierarchies of some classes via code snippets.
 
-TODO: fill out
+## Algorithms
+
+```@example
+import AbstractTrees as AT
+import InteractiveUtils as IU
+import ClimaTimeSteppers as CTS
+AT.children(x::Type) = IU.subtypes(x)
+AT.print_tree(CTS.DistributedODEAlgorithm)
+```
+
+## Tableaus
+
+```@example
+import AbstractTrees as AT
+import InteractiveUtils as IU
+import ClimaTimeSteppers as CTS
+AT.children(x::Type) = IU.subtypes(x)
+AT.print_tree(CTS.AbstractTableau)
+```