feat(messages): Implement reply functionality

This commit introduces the ability to reply to messages.

- **API & Data Layer:**
  - Replaced `replyTo` parameter with `forward` in `sendMessage` calls across the data, domain, and repository layers to support the new reply mechanism.

- **ViewModel:**
  - Added logic to handle the reply state, including storing the replied message's ID (`replyToCmId`).
  - When a message is sent, it now correctly constructs a `forward` JSON object if it is a reply.
  - The UI state (`MessagesHistoryScreenState`) is updated to show and hide the reply preview.
  - Added a `onReplyCloseClicked` handler to cancel a reply.
  - The ViewModel interface was removed, and the implementation class `MessagesHistoryViewModelImpl` is used directly.

- **UI (Compose):**
  - A new `ReplyContainer` is displayed above the message input bar when a reply is active.
  - The input bar's corner radius animates to integrate with the reply container.
  - Added a `FocusRequester` to automatically focus the input field when the reply action is selected.
  - Added spacing in the message list to prevent the reply preview from overlapping messages.
  - The message options dialog now passes the `messageId` and `cmId` when an option is picked.

core/model/src/main/kotlin/dev/meloda/fast/model/api/requests/MessagesRequest.kt

@@ -34,7 +34,7 @@ data class MessagesSendRequest(
     val message: String?,
     val lat: Int? = null,
     val lon: Int? = null,
-    val replyTo: Long? = null,
+    val forward: String? = null,
     val stickerId: Long? = null,
     val disableMentions: Boolean? = null,
     val doNotParseLinks: Boolean? = null,
@@ -51,7 +51,7 @@ data class MessagesSendRequest(
             message?.let { this["message"] = it }
             lat?.let { this["lat"] = it.toString() }
             lon?.let { this["lon"] = it.toString() }
-            replyTo?.let { this["reply_to"] = it.toString() }
+            forward?.let { this["forward"] = it }
             stickerId?.let { this["sticker_id"] = it.toString() }
             disableMentions?.let { this["disable_mentions"] = it.asInt().toString() }
             doNotParseLinks?.let { this["dont_parse_links"] = it.asInt().toString() }