d/jak2: get script decompiling, no ref tests yet (#1877)

Has boxed array accessing that prevents me from adding anything to ref
tests (the entire file is lambdas so the access pattern that i would
like to ignore happens at the top-level, can't ignore it.

This code actually already has quite a bit of original docstrings so
it's not too bad in that regard considering a `script-context` can have
16 arbitrary objects. It seems they rarely put more than a single object
in the context and the types are usually obvious / are actually type
checked!

decompiler/config/jak2/stack_structures.jsonc

@@ -771,6 +771,11 @@
   "(method 10 editable-face)": [[16, ["inline-array", "vector", 6]]],
   "(method 11 editable)": [[16, "collide-query"]],
   "(method 10 editable-plane)": [[16, "matrix"]],
+  "(method 9 script-context)": [[16, "script-context"]],
+  "(anon-function 32 script)": [
+    [16, "vector"],
+    [32, "vector"]
+  ],
   // placeholder
   "placeholder-do-not-add-below": []
 }