Wrong `tasks.json` is being used during F5 from an `azd` initialization

[ggailey777]

This issue is related to #21.

Problem:

The root tasks.json only defines the func: host start task, but is missing the pip install (functions) and func: extensions install tasks that it depends on. These tasks exist in tasks.json in the /src folder, but that file is not used when the workspace root is the repo root (which is the default when cloning).

This means pressing F5 fails because:

The dependsOn tasks (pip install, extensions install) referenced in tasks.json in /src are not found, even though the root tasks.json has "cwd": "${workspaceFolder}/src", it has no dependency chain to install requirements first

Fix:

The root tasks.json should include all three tasks with "cwd": "${workspaceFolder}/src":

{
  "version": "2.0.0",
  "tasks": [
    {
      "label": "pip install (functions)",
      "type": "shell",
      "osx": { "command": "${config:azureFunctions.pythonVenv}/bin/python -m pip install -r requirements.txt" },
      "windows": { "command": "${config:azureFunctions.pythonVenv}\\Scripts\\python -m pip install -r requirements.txt" },
      "linux": { "command": "${config:azureFunctions.pythonVenv}/bin/python -m pip install -r requirements.txt" },
      "options": { "cwd": "${workspaceFolder}/src" },
      "problemMatcher": []
    },
    {
      "type": "func",
      "label": "func: host start",
      "command": "host start",
      "problemMatcher": "$func-python-watch",
      "isBackground": true,
      "options": { "cwd": "${workspaceFolder}/src" },
      "dependsOn": "func: extensions install"
    },
    {
      "type": "func",
      "command": "extensions install",
      "dependsOn": "pip install (functions)",
      "options": { "cwd": "${workspaceFolder}/src" },
      "problemMatcher": []
    }
  ]
}