feat: add animation_id to DotLottie Config

[theashraf]

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Latest commit: 4106909

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[Copilot]

Pull Request Overview

This PR adds a new field, animation_id, to the DotLottie configuration and updates its handling in the state machine engine, player logic, and FFI bindings so that animations can now be referenced explicitly by their ID.

• Added animation_id to the state struct in dotlottie-rs.
• Updated Config struct and default implementation with animation_id.
• Extended FFI bindings (both C++ and C) to include animation_id.

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
dotlottie-rs/src/state_machine_engine/states/mod.rs	Added animation_id field to State to integrate with the state machine configuration.
dotlottie-rs/src/dotlottie_player.rs	Updated Config, default implementation, and animation loading flow to handle animation_id.
dotlottie-ffi/src/ffi/types.rs	Extended DotLottieConfig and its conversions to include animation_id.
dotlottie-ffi/emscripten_bindings.cpp	Added binding for animationId in the player bindings.
dotlottie-ffi/bindings.h	Updated DotLottieConfig struct to add animation_id.

Files not reviewed (1)

• dotlottie-ffi/src/dotlottie_player.udl: Language not supported

[samuelOsborne]

@theashraf Code looks good, could you pls fix the test and add a new one to test this loading mechanism ?