feat: Add 'call' support to improve 2-way audio experience (#2486)

Draws significant inspiration (and direct styling) from
https://github.com/dermotduffy/advanced-camera-card/pull/2447 . Thank
you @Maudfer !

BREAKING CHANGE:

The microphone condition previously bundled two unrelated signals —
whether a two-way-audio session was connected and whether the microphone
was muted. Connection state is now its own dedicated call condition, and
microphone is reserved purely for mute state. Configs are upgraded
automatically (the card rewrites affected conditions under overrides,
elements, and automations). If you maintain config by hand, convert as
follows:

If you only used connected:

# Before
```yaml
condition: microphone
connected: true
```

# After
```yaml
condition: call
call: true
```
If you used both connected and muted — they must be split into two
conditions, since they no longer live together:

# Before
```yaml
condition: microphone
connected: true
muted: false
```

# After
```yaml
condition: and
conditions:
  - condition: call
    call: true
  - condition: microphone
    muted: false
```

src/const.ts

@@ -244,6 +244,8 @@ export const CONF_MEDIA_VIEWER_TRANSITION_EFFECT =
   `${CONF_MEDIA_VIEWER}.transition_effect` as const;
 export const CONF_MEDIA_VIEWER_CONTROLS_BUILTIN =
   `${CONF_MEDIA_VIEWER}.controls.builtin` as const;
+export const CONF_MEDIA_VIEWER_CONTROLS_NEXT_PREVIOUS_AUTO_HIDE =
+  `${CONF_MEDIA_VIEWER}.controls.next_previous.auto_hide` as const;
 export const CONF_MEDIA_VIEWER_CONTROLS_NEXT_PREVIOUS_STYLE =
   `${CONF_MEDIA_VIEWER}.controls.next_previous.style` as const;
 export const CONF_MEDIA_VIEWER_CONTROLS_NEXT_PREVIOUS_SIZE =
@@ -289,6 +291,11 @@ export const CONF_LIVE_AUTO_PAUSE = `${CONF_LIVE}.auto_pause` as const;
 export const CONF_LIVE_AUTO_MUTE = `${CONF_LIVE}.auto_mute` as const;
 export const CONF_LIVE_AUTO_UNMUTE = `${CONF_LIVE}.auto_unmute` as const;
 export const CONF_LIVE_CONTROLS_BUILTIN = `${CONF_LIVE}.controls.builtin` as const;
+export const CONF_LIVE_CONTROLS_CALL_BUTTON_SIZE =
+  `${CONF_LIVE}.controls.call.button_size` as const;
+export const CONF_LIVE_CONTROLS_CALL_LOCK = `${CONF_LIVE}.controls.call.lock` as const;
+export const CONF_LIVE_CONTROLS_NEXT_PREVIOUS_AUTO_HIDE =
+  `${CONF_LIVE}.controls.next_previous.auto_hide` as const;
 export const CONF_LIVE_CONTROLS_NEXT_PREVIOUS_STYLE =
   `${CONF_LIVE}.controls.next_previous.style` as const;
 export const CONF_LIVE_CONTROLS_NEXT_PREVIOUS_SIZE =
@@ -363,7 +370,6 @@ export const CONF_LIVE_MICROPHONE_AUTO_UNMUTE =
   `${CONF_LIVE}.microphone.auto_unmute` as const;
 export const CONF_LIVE_MICROPHONE_DISCONNECT_SECONDS =
   `${CONF_LIVE}.microphone.disconnect_seconds` as const;
-export const CONF_LIVE_MICROPHONE_LOCK = `${CONF_LIVE}.microphone.lock` as const;
 export const CONF_LIVE_MICROPHONE_MUTE_AFTER_MICROPHONE_MUTE_SECONDS =
   `${CONF_LIVE}.microphone.mute_after_microphone_mute_seconds` as const;
 export const CONF_LIVE_ZOOMABLE = `${CONF_LIVE}.zoomable` as const;
@@ -406,6 +412,7 @@ export const CONF_TIMELINE_CONTROLS_THUMBNAILS_SHOW_INFO_CONTROL =
 
 const CONF_MENU = 'menu' as const;
 export const CONF_MENU_ALIGNMENT = `${CONF_MENU}.alignment` as const;
+export const CONF_MENU_AUTO_HIDE = `${CONF_MENU}.auto_hide` as const;
 export const CONF_MENU_POSITION = `${CONF_MENU}.position` as const;
 export const CONF_MENU_STYLE = `${CONF_MENU}.style` as const;
 export const CONF_MENU_BUTTON_SIZE = `${CONF_MENU}.button_size` as const;
@@ -420,6 +427,7 @@ export const CONF_MENU_BUTTONS_MEDIA_PLAYER =
 export const CONF_MENU_BUTTONS_TIMELINE = `${CONF_MENU_BUTTONS}.timeline` as const;
 
 export const CONF_STATUS_BAR = 'status_bar' as const;
+export const CONF_STATUS_BAR_AUTO_HIDE = `${CONF_STATUS_BAR}.auto_hide` as const;
 export const CONF_STATUS_BAR_POSITION = `${CONF_STATUS_BAR}.position` as const;
 export const CONF_STATUS_BAR_STYLE = `${CONF_STATUS_BAR}.style` as const;
 export const CONF_STATUS_BAR_POPUP_SECONDS = `${CONF_STATUS_BAR}.popup_seconds` as const;
@@ -461,3 +469,6 @@ export const MEDIA_PLAYER_SUPPORT_BROWSE_MEDIA = 131072;
 // improved rendering performance.
 export const MEDIA_CHUNK_SIZE_DEFAULT = 50;
 export const MEDIA_CHUNK_SIZE_MAX = 1000;
+
+// The name of the exit keyframe defined in `scss/pop-animation.scss`.
+export const POP_OUT_ANIMATION_NAME = 'pop-out';