[C API] Add APIs to inspect compound heap types (#5195)

Adds C APIs to inspect compound struct, array and signature heap types:

Obtain field types, field packed types and field mutabilities of struct types:

    BinaryenStructTypeGetNumFields (to iterate)
        BinaryenStructTypeGetFieldType
        BinaryenStructTypeGetFieldPackedType
        BinaryenStructTypeIsFieldMutable

Obtain element type, element packed type and element mutability of array types:

    BinaryenArrayTypeGetElementType
    BinaryenArrayTypeGetElementPackedType
    BinaryenArrayTypeIsElementMutable

Obtain parameter and result types of signature types:

    BinaryenSignatureTypeGetParams
    BinaryenSignatureTypeGetResults

1 files changed, 1 insertions, 1 deletions

diff --git a/test/example/c-api-kitchen-sink.txt b/test/example/c-api-kitchen-sink.txt
index 0d7ef581b..408c06444 100644
--- a/test/example/c-api-kitchen-sink.txt
+++ b/test/example/c-api-kitchen-sink.txt
@@ -3041,7 +3041,7 @@ module with recursive GC types:
  (type $SomeStruct (struct_subtype (field $SomeField (mut (ref null $SomeStruct))) data))
  (type $SomeSignature (func_subtype (param (ref null $SomeSignature) (ref null $SomeArray)) (result (ref null $SomeSignature)) func))
  (type $none_=>_none (func_subtype func))
- (type $SomeSubStruct (struct_subtype (field $SomeField (mut (ref null $SomeStruct))) (field $SomePackedField (mut i8)) $SomeStruct))
+ (type $SomeSubStruct (struct_subtype (field $SomeField (mut (ref null $SomeStruct))) (field $SomePackedField i8) $SomeStruct))
  (func $test (type $none_=>_none)
   (local $0 (ref null $SomeArray))
   (local $1 (ref null $SomeStruct))