[TaskCenter][4/n] Remove TaskCenter/Metadata references from Bifrost

Also, exercises `in_tc()` in some tests. Those will be swapped with `restate_core::test` in next PRs.

Example of impact:
```rust
  let bifrost = node_env
      .tc
      .run_in_scope(
          "bifrost init",
          None,
          Bifrost::init_in_memory(node_env.metadata.clone()),
      )
      .await;
```

Becomes:
```rust
  let bifrost = Bifrost::init_in_memory().in_tc(&node_env.tc).await;
```

Author: AhmedSoliman

crates/admin/src/cluster_controller/service.rs

@@ -8,22 +8,23 @@
 // the Business Source License, use of this software will be governed
 // by the Apache License, Version 2.0.
 
+mod util;
+
 use std::ops::Range;
 
 use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion, Throughput};
 use futures::stream::{FuturesOrdered, FuturesUnordered};
 use futures::StreamExt;
+use tracing::info;
+use tracing_subscriber::EnvFilter;
+
 use restate_bifrost::{Bifrost, BifrostService};
-use restate_core::metadata;
 use restate_rocksdb::{DbName, RocksDbManager};
 use restate_types::config::{
     BifrostOptionsBuilder, CommonOptionsBuilder, ConfigurationBuilder, LocalLogletOptionsBuilder,
 };
 use restate_types::live::Live;
 use restate_types::logs::LogId;
-use tracing::info;
-use tracing_subscriber::EnvFilter;
-mod util;
 
 async fn append_records_multi_log(bifrost: Bifrost, log_id_range: Range<u32>, count_per_log: u64) {
     let mut appends = FuturesUnordered::new();
@@ -105,9 +106,7 @@ fn write_throughput_local_loglet(c: &mut Criterion) {
     ));
 
     let bifrost = tc.block_on(async {
-        let metadata = metadata();
-        let bifrost_svc = BifrostService::new(restate_core::task_center(), metadata)
-            .enable_local_loglet(&Live::from_value(config));
+        let bifrost_svc = BifrostService::new().enable_local_loglet(&Live::from_value(config));
         let bifrost = bifrost_svc.handle();
 
         // start bifrost service in the background

crates/bifrost/benches/append_throughput.rs

@@ -11,14 +11,15 @@
 use std::sync::Arc;
 use std::time::Instant;
 
-use restate_types::storage::StorageEncode;
 use tracing::{debug, info, instrument, warn};
 
+use restate_core::Metadata;
 use restate_types::config::Configuration;
 use restate_types::live::Live;
 use restate_types::logs::metadata::SegmentIndex;
 use restate_types::logs::{LogId, Lsn, Record};
 use restate_types::retries::RetryIter;
+use restate_types::storage::StorageEncode;
 
 use crate::bifrost::BifrostInner;
 use crate::loglet::AppendError;
@@ -167,8 +168,9 @@ impl Appender {
                 );
                 return Ok(loglet);
             } else {
+                let log_version = Metadata::with_current(|m| m.logs_version());
                 debug!(
-                    log_version = %bifrost_inner.metadata.logs_version(),
+                    log_version = %log_version,
                     "Still waiting for sealing to complete. Elapsed={:?}",
                     start.elapsed(),
                 );