*: replace interface{} with any keyword

Everywhere including examples, external interop APIs, bindings generators
code and in other valuable places. A couple of `interface{}` usages are
intentionally left in the CHANGELOG.md, documentation and tests.

pkg/interop/util/util.go

@@ -27,12 +27,12 @@ func FromAddress(address string) interop.Hash160 {
 // Equals compares a with b and will return true when a and b are equal. It's
 // implemented as an EQUAL VM opcode, so the rules of comparison are those
 // of EQUAL.
-func Equals(a, b interface{}) bool {
+func Equals(a, b any) bool {
 	return neogointernal.Opcode2("EQUAL", a, b).(bool)
 }
 
 // Remove removes element with index i from slice.
 // This is done in place and slice must have type other than `[]byte`.
-func Remove(slice interface{}, i int) {
+func Remove(slice any, i int) {
 	neogointernal.Opcode2NoReturn("REMOVE", slice, i)
 }