add gsl to bcr

modules/gsl/4.0.0/MODULE.bazel

@@ -0,0 +1,7 @@
+module(
+    name = "gsl",
+    version = "4.0.0",
+    compatibility_level = 4,
+)
+
+bazel_dep(name = "rules_cc", version = "0.0.9")

modules/gsl/4.0.0/patches/build_dot_bazel.patch

@@ -0,0 +1,27 @@
+--- /dev/null
++++ BUILD.bazel
+@@ -0,0 +1,24 @@
++load("@rules_cc//cc:defs.bzl", "cc_library")
++
++cc_library(
++    name = "gsl",
++    hdrs = [
++        "gsl/algorithm",
++        "gsl/assert",
++        "gsl/byte",
++        "gsl/gsl",
++        "gsl/gsl_algorithm",
++        "gsl/gsl_assert",
++        "gsl/gsl_byte",
++        "gsl/gsl_narrow",
++        "gsl/gsl_util",
++        "gsl/narrow",
++        "gsl/pointers",
++        "gsl/span",
++        "gsl/span_ext",
++        "gsl/string_span",
++        "gsl/util",
++    ],
++    includes = ["."],
++    visibility = ["//visibility:public"],
++)

modules/gsl/4.0.0/patches/module_dot_bazel.patch

@@ -0,0 +1,8 @@
+--- /dev/null
++++ MODULE.bazel
+@@ -0,0 +1,5 @@
++module(
++    name = "gsl",
++    version = "4.0.0",
++    compatibility_level = 4,
++)

modules/gsl/4.0.0/presubmit.yml

@@ -0,0 +1,11 @@
+matrix:
+  bazel: ["6.x", "7.x"]
+  platform: ["debian10", "macos", "macos_arm64", "ubuntu2004", "windows"]
+
+tasks:
+  verify_targets:
+    name: Verify build targets
+    bazel: ${{ bazel }}
+    platform: ${{ platform }}
+    build_targets:
+      - '@gsl//:gsl'

modules/gsl/4.0.0/source.json

@@ -0,0 +1,9 @@
+{
+  "integrity": "sha256-65H8sQpqpcyx0iTgelbI7P/pobtgH6GEgnbsRqIgC/s=",
+  "patches": {
+    "build_dot_bazel.patch": "sha256-4Lo5q23jOPGlpXKmpPqxk90jQSuTf8o63QJE7MLxqmA=",
+    "module_dot_bazel.patch": "sha256-I5KhvDC32BRXw0A8KKVQ4MTaSFRWPo7Nhiy/bxy7Oic="
+  },
+  "strip_prefix": "GSL-4.0.0/include",
+  "url": "https://github.com/microsoft/GSL/archive/refs/tags/v4.0.0.zip"
+}

modules/gsl/metadata.json

@@ -0,0 +1,5 @@
+{
+  "versions": [
+    "4.0.0"
+  ]
+}