Add target for iOS render test to Bazel (#1277)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

vendor/BUILD.bazel

@@ -104,6 +104,24 @@ cc_library(
     visibility = ["//visibility:public"],
 )
 
+objc_library(
+    name = "zip-archive",
+    srcs = [
+        "zip-archive/SSZipArchive/SSZipArchive.h",
+        "zip-archive/SSZipArchive/SSZipArchive.m",
+        "zip-archive/SSZipArchive/SSZipCommon.h",
+    ] + glob(
+        [
+            "zip-archive/SSZipArchive/minizip/*.c",
+            "zip-archive/SSZipArchive/minizip/*.h",
+        ],
+        allow_empty = False,
+    ),
+    defines = ["ZLIB_COMPAT"],
+    includes = ["zip-archive/SSZipArchive"],
+    visibility = ["//visibility:public"],
+)
+
 # vendor/boost-files.json
 cc_library(
     name = "boost",
@@ -192,6 +210,7 @@ cc_library(
     hdrs = glob(["icu/include/unicode/*.h"]),
     copts = CPP_FLAGS + [
         "-Wno-c11-extensions",
+        "-Wno-conversion",
     ],
     includes = ["icu/include"],
     visibility = ["//visibility:public"],