feat: autogen GH workflows and split build, test, and publish (#971)

Closes https://github.com/ooni/probe/issues/2337.

GHGEN/ios.go

@@ -0,0 +1,34 @@
+package main
+
+//
+// Generates iOS workflow.
+//
+
+import (
+	"io"
+
+	"github.com/ooni/probe-cli/v3/internal/runtimex"
+)
+
+func buildAndPublishMobileIOS(w io.Writer, job *Job) {
+	runtimex.Assert(len(job.ArchsMatrix) <= 0, "expected no architecture matrix")
+
+	buildJob := "build_ios_mobile"
+	artifacts := []string{
+		"./MOBILE/ios/oonimkall.xcframework.zip",
+		"./MOBILE/ios/oonimkall.podspec",
+	}
+	publishJob := "publish_ios_mobile"
+
+	newJob(w, buildJob, runsOnMacOS, noDependencies, noPermissions)
+	newStepCheckout(w)
+	newStepSetupGo(w, "ios")
+	newStepSetupPsiphon(w)
+	newStepMake(w, "EXPECTED_XCODE_VERSION=13.2.1 MOBILE/ios")
+	newStepUploadArtifacts(w, artifacts)
+
+	newJob(w, publishJob, runsOnUbuntu, buildJob, contentsWritePermissions)
+	newStepCheckout(w)
+	newStepDownloadArtifacts(w, artifacts)
+	newStepGHPublish(w, artifacts)
+}