Add Global CMake Build and OSS Tests (#1217)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1217

This updates the CMake build present for being able to share options, fixing up flags, etc. A GTest build is added as well, along with a script and VSCode debug target so that OSS contributors can very easily run and debug tests on any OS.

Note that this isn't completely done (need to revise Windows, Mac, documentation), but should be finished enough otherwise for review.

Changelog: [Internal]

Reviewed By: cortinico

Differential Revision: D42406686

fbshipit-source-id: 95e7ba5e4751c496a171785490e85cf0097fa839

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "ms-vscode.cpptools",
+    "EditorConfig.EditorConfig",
+    "dbaeumer.vscode-eslint",
+  ]
+}

.vscode/launch.json

@@ -0,0 +1,25 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug C++ Unit tests (lldb)",
+      "type": "cppdbg",
+      "MIMode": "lldb",
+      "request": "launch",
+      "program": "${workspaceFolder}/tests/build/yogatests",
+      "cwd": "${workspaceFolder}",
+      "preLaunchTask": "Build Unit Tests"
+    },
+    {
+      "name": "Debug C++ Unit tests (vsdbg)",
+      "type": "cppvsdbg",
+      "request": "launch",
+      "program": "${workspaceFolder}/tests/build/yogatests",
+      "cwd": "${workspaceFolder}",
+      "preLaunchTask": "Build Unit Tests"
+    }
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,20 @@
+{
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.fixAll.eslint": true
+  },
+  "eslint.format.enable": true,
+  "eslint.packageManager": "yarn",
+  "eslint.enable": true,
+  "eslint.validate": [
+    "javascript",
+    "javascriptreact",
+    "typescript",
+    "typescriptreact"
+  ],
+  "eslint.workingDirectories": [
+    {
+      "mode": "auto"
+    }
+  ],
+}

.vscode/tasks.json

@@ -0,0 +1,23 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Build Unit Tests",
+      "type": "shell",
+      "command": "(which ninja && cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug -G Ninja || cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug) && cmake --build build",
+      "windows": {
+        "command": "(where ninja && cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug -G Ninja || cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug) && cmake --build build",
+      },
+      "group": "build",
+      "options": {
+        "cwd": "tests"
+      },
+      "presentation": {
+        "reveal": "always",
+        "panel": "new"
+      }
+    }
+  ]
+}