Add fixture to multiple processes

tests/go/fixtures/multipleprocesses/Procfile

@@ -0,0 +1,2 @@
+api: api
+worker: worker

tests/go/fixtures/multipleprocesses/cmd/api/main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+    "fmt"
+    "net/http"
+    "os"
+)
+
+func main() {
+    http.HandleFunc("/", hello)
+    http.HandleFunc("/healthcheck", healthcheck)
+
+
+    port := os.Getenv("PORT")
+    if port == "" {
+        port = "8888"
+    }
+
+    err := http.ListenAndServe(":" + port, nil)
+    if err != nil {
+        panic(err)
+    }
+}
+
+func hello(res http.ResponseWriter, req *http.Request) {
+    fmt.Fprintln(res, "hello, world!")
+}
+
+func healthcheck(res http.ResponseWriter, req *http.Request) {
+    fmt.Fprintln(res, "WORKING")
+}

tests/go/fixtures/multipleprocesses/cmd/worker/main.go

@@ -0,0 +1,14 @@
+package main
+
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	for {
+		fmt.Println("worker")
+		time.Sleep(time.Minute)
+	}
+}

tests/go/fixtures/multipleprocesses/go.mod

@@ -0,0 +1,3 @@
+module multipleprocesses
+
+go 1.22.2