Backend: add parallel cpu benchmarks processing (#603)

* Add parallel cpu benchmarks processing

* Expose Parallel Hashrate Score in UI (as 'Parallel CPU speed')

* Remove unused variable and fix cfg(debug)

* Fix tests after removing old_chain_name

* Update Dockerfile

* bullseye for both images

---------

Co-authored-by: Volodymyr Brazhnyk <volbr@pm.me>

backend/common/src/node_message.rs

@@ -98,6 +98,9 @@ pub struct NodeHwBench {
     pub memory_memcpy_score: u64,
     pub disk_sequential_write_score: Option<u64>,
     pub disk_random_write_score: Option<u64>,
+    pub parallel_cpu_hashrate_score: Option<u64>,
+    //// Dev note: this exists but isn't needed yet:
+    // pub parallel_cpu_cores: Option<usize>,
 }
 
 impl Payload {

backend/common/src/node_types.rs

@@ -73,6 +73,11 @@ pub struct NodeHwBench {
     pub disk_sequential_write_score: Option<u64>,
     /// Random disk write speed in MB/s.
     pub disk_random_write_score: Option<u64>,
+    /// The parallel CPU speed, as measured in how many MB/s it can hash using the BLAKE2b-256 hash.
+    pub parallel_cpu_hashrate_score: Option<u64>,
+    //// Dev note: this exists but isn't needed yet:
+    // /// The number of cores used for the parallel CPU benchmark.
+    // pub parallel_cpu_cores: Option<usize>,
 }
 
 /// A couple of node statistics.