initial working version of web server flow

sfdx_auth_url.json

@@ -0,0 +1,9 @@
+{
+  "status": 0,
+  "result": {
+    "sfdxAuthUrl": "force://PlatformCLI::5Aep8618kS0Qqf3GEL4qVTX2VSz2qiUtn3Grl0qSlJjRoSGz03Uv86qbbx2MOhcIyj.OTqFKFH.olbk5LdlYEAv@computing-platform-9537--qa.sandbox.my.salesforce.com"
+  },
+  "warnings": [
+    "This command exposes an SFDX Auth URL. Unlike an access token, this credential contains a refresh token that allows extended access to an org. Avoid sharing or logging this URL. For additional information about org authorization, review https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_auth_url.htm."
+  ]
+}