.vscode: Add spirv-tools-ext to include path

37f30185 added CMake rules to copy the `OpenCLDebugInfo100.h` header out of a polluted build intermediate directory and into a separate include directory.

Add this include directory to the .vscode include paths so vscode can also find it.

All of this smell should go away once https://github.com/KhronosGroup/SPIRV-Headers/issues/137 is addressed.

Bug: b/145351270
Change-Id: I1a20e6f6b507e10c90fed38dd8a94d4b3ff590f7
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/40129
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 0829b69..702049a 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -16,7 +16,8 @@
                 "${workspaceFolder}/third_party/llvm-7.0/llvm/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/common/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/linux/include",
-                "${workspaceFolder}/third_party/cppdap/include"
+                "${workspaceFolder}/third_party/cppdap/include",
+                "${workspaceFolder}/build/spirv-tools-ext/include"
             ],
             "cStandard": "c11",
             "cppStandard": "c++14"
@@ -37,7 +38,8 @@
                 "${workspaceFolder}/third_party/llvm-7.0/llvm/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/common/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/darwin/include",
-                "${workspaceFolder}/third_party/cppdap/include"
+                "${workspaceFolder}/third_party/cppdap/include",
+                "${workspaceFolder}/build/spirv-tools-ext/include"
             ],
             "cStandard": "c11",
             "cppStandard": "c++14"
@@ -58,7 +60,8 @@
                 "${workspaceFolder}/third_party/llvm-7.0/llvm/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/common/include",
                 "${workspaceFolder}/third_party/llvm-7.0/configs/windows/include",
-                "${workspaceFolder}/third_party/cppdap/include"
+                "${workspaceFolder}/third_party/cppdap/include",
+                "${workspaceFolder}/build/spirv-tools-ext/include"
             ],
             "cStandard": "c11",
             "cppStandard": "c++14"