move ci scripts and add generation step

scripts/build-fixtures.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+
+cd Tests/Fixtures/TestProject
+./build.sh

scripts/diff-fixtures.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+
+if [[ `git status --porcelain Tests/Fixtures/TestProject` ]]; then
+  echo ""
+  echo "⚠️  Generated TestProject has changed."
+  echo "⚠️  If this is a valid change please run the tests and commit the updated TestProject."
+  echo ""
+  git --no-pager diff --color=always Tests/Fixtures/TestProject
+  exit 1
+else
+  echo "✅  Generated TestProject has not changed."
+fi

scripts/gen-fixtures.sh

@@ -1 +1,4 @@
+#!/bin/bash
+set -e
+
 swift run xcodegen --spec Tests/Fixtures/TestProject/project.yml