VS Code -> Zed tasks converter (#9538)

We can convert shell, npm and gulp tasks to a Zed format. Additionally, we convert a subset of task variables that VsCode supports.

Release notes:

- Zed can now load tasks in Visual Studio Code task format

---------

Co-authored-by: Piotr Osiewicz <piotr@zed.dev>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

crates/task/test_data/rust-analyzer.json

@@ -0,0 +1,67 @@
+// See https://go.microsoft.com/fwlink/?LinkId=733558
+// for the documentation about the tasks.json format
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Build Extension in Background",
+      "group": "build",
+      "type": "npm",
+      "script": "watch",
+      "path": "editors/code/",
+      "problemMatcher": {
+        "base": "$tsc-watch",
+        "fileLocation": ["relative", "${workspaceFolder}/editors/code/"]
+      },
+      "isBackground": true
+    },
+    {
+      "label": "Build Extension",
+      "group": "build",
+      "type": "npm",
+      "script": "build",
+      "path": "editors/code/",
+      "problemMatcher": {
+        "base": "$tsc",
+        "fileLocation": ["relative", "${workspaceFolder}/editors/code/"]
+      }
+    },
+    {
+      "label": "Build Server",
+      "group": "build",
+      "type": "shell",
+      "command": "cargo build --package rust-analyzer",
+      "problemMatcher": "$rustc"
+    },
+    {
+      "label": "Build Server (Release)",
+      "group": "build",
+      "type": "shell",
+      "command": "cargo build --release --package rust-analyzer",
+      "problemMatcher": "$rustc"
+    },
+    {
+      "label": "Pretest",
+      "group": "build",
+      "isBackground": false,
+      "type": "npm",
+      "script": "pretest",
+      "path": "editors/code/",
+      "problemMatcher": {
+        "base": "$tsc",
+        "fileLocation": ["relative", "${workspaceFolder}/editors/code/"]
+      }
+    },
+
+    {
+      "label": "Build Server and Extension",
+      "dependsOn": ["Build Server", "Build Extension"],
+      "problemMatcher": "$rustc"
+    },
+    {
+      "label": "Build Server (Release) and Extension",
+      "dependsOn": ["Build Server (Release)", "Build Extension"],
+      "problemMatcher": "$rustc"
+    }
+  ]
+}

crates/task/test_data/typescript.json

@@ -0,0 +1,51 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      // Kept for backwards compat for old launch.json files so it's
+      // less annoying if moving up to the new build or going back to
+      // the old build.
+      //
+      // This is first because the actual "npm: build:tests" task
+      // below has the same script value, and VS Code ignores labels
+      // and deduplicates them.
+      // https://github.com/microsoft/vscode/issues/93001
+      "label": "gulp: tests",
+      "type": "npm",
+      "script": "build:tests:notypecheck",
+      "group": "build",
+      "hide": true,
+      "problemMatcher": ["$tsc"]
+    },
+    {
+      "label": "tsc: watch ./src",
+      "type": "shell",
+      "command": "node",
+      "args": [
+        "${workspaceFolder}/node_modules/typescript/lib/tsc.js",
+        "--build",
+        "${workspaceFolder}/src",
+        "--watch"
+      ],
+      "group": "build",
+      "isBackground": true,
+      "problemMatcher": ["$tsc-watch"]
+    },
+    {
+      "label": "npm: build:compiler",
+      "type": "npm",
+      "script": "build:compiler",
+      "group": "build",
+      "problemMatcher": ["$tsc"]
+    },
+    {
+      "label": "npm: build:tests",
+      "type": "npm",
+      "script": "build:tests:notypecheck",
+      "group": "build",
+      "problemMatcher": ["$tsc"]
+    }
+  ]
+}