[ECO-4944] feat: add room level reaction implementation

Walkthrough

The changes in this pull request involve significant modifications to the Room and RoomReactions classes in the Ably chat application. The DefaultRoom class now constructs the reactions instance using clientId and realtimeChannels, while the RoomReactions class has seen the implementation of methods for sending and subscribing to reactions. Additionally, a new coroutine-based function publishCoroutine has been added to the Channel class, and unit tests for DefaultRoomReactions have been introduced to validate its functionality.

Changes

File Path	Change Summary
`chat-android/src/main/java/com/ably/chat/Room.kt`	Modified `DefaultRoom` to replace `realtimeClient` with `clientId` and `realtimeChannels` in `reactions`.
`chat-android/src/main/java/com/ably/chat/RoomReactions.kt`	Updated `DefaultRoomReactions` constructor to use `clientId` and `realtimeChannels`, implemented `send` and `subscribe` methods.
`chat-android/src/main/java/com/ably/chat/Utils.kt`	Added new method `suspend fun Channel.publishCoroutine(message: PubSubMessage)`.
`chat-android/src/test/java/com/ably/chat/RoomReactionsTest.kt`	Introduced unit tests for `DefaultRoomReactions`, validating channel naming and subscription functionality.
`example/build.gradle.kts`	Added dependency for `konfetti` library.
`example/src/main/java/com/ably/chat/example/MainActivity.kt`	Added `receivedReactions` variable and modified `ChatInputField` for handling reactions.
`gradle/libs.versions.toml`	Added version and library declaration for `konfetti-compose`.

Assessment against linked issues

Objective	Addressed	Explanation
Implement room level reactions (ECO-4944)	✅

Possibly related issues

Implement room level reactions (ably-labs/ably-chat-kotlin#3): This issue is directly related to the implementation of room-level reactions, which is a primary focus of the changes made in this PR.

Possibly related PRs

#11: The changes in the Room interface and DefaultRoom class are foundational for the chat room feature, which aligns with the overall objectives of establishing a chat room skeleton as described in this PR.
#16: The modifications to the Room and RoomReactions classes are directly related to the implementation of message handling and reactions in the chat application, which is a key focus of this PR on sending and receiving messages.
#28: The adjustments made in this PR regarding the implementation of sending messages are relevant as they may interact with the Room and RoomReactions functionalities, particularly in how messages and reactions are handled within the chat context.

Suggested reviewers

umair-ably
AndyTWF
sacOO7
lawrence-forooghian

Poem

In the chat room where bunnies play,
Reactions hop in a joyful way.
With messages sent, and laughter shared,
Our new features show how much we cared.
So let's celebrate this code delight,
As we chat and react, all day and night! 🐰✨

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ably-labs / ably-chat-kotlin