provide gclient configuration (needed meanwhile)

.gclient

+solutions = [
+  {
+    "managed": False,
+    "name": "v8",
+    "url": "https://chromium.googlesource.com/v8/v8.git",
+    "custom_deps": {},
+    "deps_file": "DEPS",
+    "safesync_url": "",
+  },
+]

.gclient_entries

+entries = {
+  'v8': 'https://chromium.googlesource.com/v8/v8.git',
+  'v8/build/gyp': 'https://chromium.googlesource.com/external/gyp.git@2889664b9fa88cce175c5c7cdf207d28420a7412',
+  'v8/buildtools': 'https://chromium.googlesource.com/chromium/buildtools.git@3b302fef93f7cc58d9b8168466905237484b2772',
+  'v8/testing/gmock': 'https://chromium.googlesource.com/external/googlemock.git@29763965ab52f24565299976b936d1265cb6a271',
+  'v8/testing/gtest': 'https://chromium.googlesource.com/external/googletest.git@be1868139ffe0ccd0e8e3b37292b84c821d9c8ad',
+  'v8/third_party/icu': 'https://chromium.googlesource.com/chromium/deps/icu.git@10834e84d250eb31a73496bfdb7923eaa43ead51',
+  'v8/tools/clang': 'https://chromium.googlesource.com/chromium/src/tools/clang.git@7ec0c52c7a66cd94c96b8eb37bacd26d152e40e6',
+  'v8/buildtools/clang_format/script': 'https://chromium.googlesource.com/chromium/llvm-project/cfe/tools/clang-format.git@81edd558fea5dd7855d67a1dc61db34ae8c1fd63',
+  'v8/buildtools/third_party/libc++/trunk': 'https://chromium.googlesource.com/chromium/llvm-project/libcxx.git@48198f9110397fff47fe7c37cbfa296be7d44d3d',
+  'v8/buildtools/third_party/libc++abi/trunk': 'https://chromium.googlesource.com/chromium/llvm-project/libcxxabi.git@4ad1009ab3a59fa7a6896d74d5e4de5885697f95',
+}