Add extra integration test and rename some

Author: owen-mc

go/ql/integration-tests/all-platforms/go/two-go-mods-nested-none-in-root/diagnostics.expected

@@ -0,0 +1,28 @@
+{
+  "markdownMessage": "2 `go.mod` files were found:\n\n`subdir0/go.mod`, `subdir0/subdir1/go.mod`",
+  "severity": "note",
+  "source": {
+    "extractorName": "go",
+    "id": "go/autobuilder/multiple-go-mod-found-nested",
+    "name": "Multiple `go.mod` files were found, all nested under one root `go.mod` file"
+  },
+  "visibility": {
+    "cliSummaryTable": false,
+    "statusPage": false,
+    "telemetry": true
+  }
+}
+{
+  "markdownMessage": "2 packages could not be found:\n\n`test/subdir2`, `subdir1/subsubdir1`.\n\nDefinitions in those packages may not be recognized by CodeQL, and files that use them may only be partially analyzed.\n\nCheck that the paths are correct and make sure any private packages can be accessed. If any of the packages are present in the repository then you may need a [custom build command](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages).",
+  "severity": "warning",
+  "source": {
+    "extractorName": "go",
+    "id": "go/autobuilder/package-not-found",
+    "name": "Some packages could not be found"
+  },
+  "visibility": {
+    "cliSummaryTable": true,
+    "statusPage": true,
+    "telemetry": true
+  }
+}

go/ql/integration-tests/all-platforms/go/two-go-mods-one-in-root/go.mod renamed to go/ql/integration-tests/all-platforms/go/two-go-mods-nested-none-in-root/subdir0/go.mod

@@ -0,0 +1,14 @@
+package subdir1
+
+import (
+	"subdir1/subsubdir1"
+
+	"golang.org/x/net/ipv4"
+)
+
+func test() {
+
+	header := ipv4.Header{}
+	header.Version = subsubdir1.Add(2, 2)
+
+}

go/ql/integration-tests/all-platforms/go/two-go-mods-not-in-root/subdir1/go.sum renamed to go/ql/integration-tests/all-platforms/go/two-go-mods-nested-none-in-root/subdir0/go.sum

@@ -1,7 +1,7 @@
 package test
 
 import (
-	"subdir2"
+	"test/subdir2"
 
 	"golang.org/x/net/ipv4"
 )

go/ql/integration-tests/all-platforms/go/two-go-mods-not-in-root/subdir1/go.mod renamed to go/ql/integration-tests/all-platforms/go/two-go-mods-nested-none-in-root/subdir0/subdir1/go.mod

@@ -0,0 +1,4 @@
+| Extraction failed in subdir0/subdir1/test.go with error cannot find package "subdir1/subsubdir1" in any of:\n\t/usr/local/Cellar/go/1.20.5/libexec/src/subdir1/subsubdir1 (from $GOROOT)\n\t/Users/owen-mc/go/src/subdir1/subsubdir1 (from $GOPATH) | 2 |
+| Extraction failed in subdir0/subdir1/test.go with error could not import subdir1/subsubdir1 (invalid package name: "") | 2 |
+| Extraction failed in subdir0/test.go with error cannot find package "test/subdir2" in any of:\n\t/usr/local/Cellar/go/1.20.5/libexec/src/test/subdir2 (from $GOROOT)\n\t/Users/owen-mc/go/src/test/subdir2 (from $GOPATH) | 2 |
+| Extraction failed in subdir0/test.go with error could not import test/subdir2 (invalid package name: "") | 2 |