Emby for Home Assistant 0.0.4

What's Changed

• fix: expose browse/search/enqueue/announce feature flags (closes #108) by @aperim-codex in #112
• feat: children_media_class for root views (closes #104) by @aperim-codex in #113
• fix: proxy Media Browser thumbnails via HA (closes #109) by @aperim-codex in #114
• test: add browse_media integration test and extend search test (closes #110) by @aperim-codex in #115
• fix: media-player spec audit – SearchMedia.result_media_class (closes #107) by @aperim-codex in #116
• fix: prevent CI failure after WebSocket tests (closes #119) by @aperim-codex in #120
• feat: WebSocket search-media test & thumbnail cleanup (closes #111, #117) by @aperim-codex in #118
• fix: conditional thumbnail proxying (closes #122) by @aperim-codex in #127
• feat: security hardening & user-profile playback support (closes #123, #124, #125, #126) by @aperim-codex in #128

Full Changelog: v0.0.3...v0.0.4