Release v0.0.1a4

What's Changed

• [api/tests]: add message_reaction and sent_activity tests by @lilyydu in #117
• Add TypingActivityInput to init so it can be imported directly ftom api by @MehakBindra in #118
• added some tests for apps package by @lilyydu in #122
• [apps] Add streaming functionality by @MehakBindra in #97
• Add graph clients to activity context by @AfreenLikeCaffeine in #115
• Add create_stream to devtools plugin by @MehakBindra in #125
• Initialize AI package by @heyitsaamir in #119
• Add support for OpenAI Responses API by @heyitsaamir in #120
• Add AI Plugins by @heyitsaamir in #121
• Merge the activity sent with response in http stream before passing it back to event manager in app by @MehakBindra in #128
• Release version 0.0.1a4 by @heyitsaamir in #129

Full Changelog: v0.0.1a3...v0.0.1a4