Use #[tokio::main] attribute instead of Runtime::new()

[CGodiksen]

This PR removes the top-level Tokio runtime created with Runtime::new() and instead uses the #[tokio::main] attribute in both modelardb_server and modelardb_manager.

It was also attempted to remove the use of thread::Builder::new().spawn() when creating the threads in the storage engine but it was not possible to find a solution that did not block the thread or cause problems with the async runtime.

It might be possible if we used async Tokio channels instead of crossbeam_channel since the current channels are blocking but that would require a larger change to the structure of the storage engine.

[Copilot]

Pull Request Overview

This PR modernizes the Tokio runtime usage by replacing manually created Runtime instances with the #[tokio::main] attribute in both modelardb_server and modelardb_manager. This change simplifies the async runtime management and eliminates the need to pass runtime instances between functions.

• Replaces manual Runtime::new() creation with #[tokio::main] attribute
• Converts synchronous main functions to async and removes runtime.block_on() calls
• Updates function signatures to be async where the runtime parameter was removed

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
crates/modelardb_server/src/main.rs	Converts main function to async with #[tokio::main] and removes manual runtime creation
crates/modelardb_server/src/context.rs	Removes runtime parameter from Context::try_new()
crates/modelardb_server/src/storage/mod.rs	Moves runtime creation inside StorageEngine::try_new() instead of receiving it as parameter
crates/modelardb_server/src/remote.rs	Makes start_apache_arrow_flight_server() async and removes runtime parameter
crates/modelardb_server/src/storage/uncompressed_data_manager.rs	Removes runtime parameter from test context creation
crates/modelardb_server/src/configuration.rs	Removes runtime parameter from test storage engine creation
crates/modelardb_manager/src/main.rs	Converts main function to async with #[tokio::main] and removes manual runtime creation
crates/modelardb_manager/src/remote.rs	Makes start_apache_arrow_flight_server() async and removes runtime parameter

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