* remove non-standard workflow extensions, create overloads for IHostedAgentBuilder * rework * rollback extensions in a2a
* skeleton * wip * rename + fix tests * implement workflow tests * fix comments * Update dotnet/src/Microsoft.Agents.AI.Hosting/HostApplicationBuilderWorkflowExtensions.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * fixes * fix worfklow build logic * rollback + new overload on workflow builder * address PR comments * :) --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>