fix: add full card structure to updateTemplateCard

fix: add required card_action to updateTemplateCard

fix: add required card_action to template card

feat: implement template card streaming for self-built apps

fix: resolve native media fallback and missing extension issues for WeChat demand support

feat: add audio capability and sync/async native media handling

feat: implement passive media replies (voice, video, image) for self-built apps

Initial project commit