Adds the AuthPlugin. Closes #875

[waldekmastykarz]

Adds the AuthPlugin. Closes #875

[waldekmastykarz]

Here's a sample config file that you can use for testing:

{
  "$schema": "https://github.com/raw/microsoft/dev-proxy/main/schemas/v0.21.0/rc.schema.json",
  "plugins": [
    {
      "name": "AuthPlugin",
      "enabled": true,
      "pluginPath": "~appFolder/plugins/dev-proxy-plugins.dll",
      "configSection": "authPlugin"
    }
  ],
  "urlsToWatch": [
    "https://jsonplaceholder.typicode.com/*"
  ],
  "authPluginApiKey": {
    "type": "apiKey",
    "apiKey": {
      "in": "header, query",
      "name": "x-api-key",
      "allowedKeys": [
        "1234",
        "abc"
      ]
    }
  },
  "authPlugin": {
    "type": "oauth2",
    "oauth2": {
      "metadataUrl": "https://login.microsoftonline.com/organizations/v2.0/.well-known/openid-configuration",
      "allowedApplications": [
        "0bf30f3b-4a52-48df-9a82-234910c4a086"
      ],
      "allowedAudiences": [
        "5fd6c579-77d2-4ad4-9064-b8b2297a6fb5"
      ],
      "allowedPrincipals": [
        "0a594dfe-5f6c-4029-8c3f-48102e14e4ba"
      ],
      "allowedTenants":[
        "bf805346-44e7-43f7-8e60-c5e24aefe49c"
      ],
      "issuer": "https://login.microsoftonline.com/bf805346-44e7-43f7-8e60-c5e24aefe49c/v2.0",
      "scopes": [
        "Posts.Read"
      ],
      "validateLifetime": false,
      "validateSigningKey": true
    }
  },
  "rate": 50,
  "logLevel": "debug",
  "newVersionNotification": "stable"
}

It contains a sample config for API key auth and OAuth. Switch in the plugin instance which one you want to use and try the different settings. OAuth settings are meant to support any IdP but also the settings that are supported by Easy Auth.