Adds tests for multiple goroutines (#331)

Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>

config_unsupported.go

@@ -2,6 +2,8 @@
 
 package wazero
 
+const JITSupported = false
+
 // NewRuntimeConfig returns NewRuntimeConfigInterpreter
 func NewRuntimeConfig() *RuntimeConfig {
 	return NewRuntimeConfigInterpreter()