Add microphone input, dynamic audio playback, client HTTP to Script API

Right now, three related gaps in the Script API block a whole category of addons: anything that talks to an outside service and responds with voice. 1) Microphone input: scripts have no way to receive audio, or even a transcribed string, from the player's microphone, on any platform. An opt-in, permission-gated "push to talk" hook that hands a script a transcript or audio buffer would open the door to voice-controlled addons. 2) Dynamic audio playback: resource packs can only play .ogg files bundled ahead of time. There's no way to play back audio generated or downloaded at runtime. Streaming or buffer-based audio playback from script would let addons speak dynamic, non-prebaked lines. 3) Client-side/local-world HTTP: @minecraft/server-net only works on a self-hosted Bedrock Dedicated Server. Most players never touch one, so this shuts these addons out for the vast majority of players. A sandboxed, permission-gated HTTP module available in local worlds too (manual opt-in toggle, rate limits, clear security warning) would fix that. Together these three would let creators build genuinely interactive, voice-capable addons on Bedrock, not just scripted mobs. Would love to see any of these looked at.