perf: add microbenchmarks for a simple diamond with string manipulati…

…on (#1476)

`cargo bench -p benches --bench words_diamond`

```
hydroflow_diamond
                        time:   [72.142 ms 72.831 ms 73.535 ms]
hydroflo2_diamond_forloop
                        time:   [49.023 ms 49.128 ms 49.291 ms]
hydroflo2_diamond_iter_clone_chain
                        time:   [60.333 ms 60.675 ms 61.171 ms]
hydroflo2_diamond_iter_clone_interleave
                        time:   [67.000 ms 67.275 ms 67.613 ms]
hydroflo2_diamond_iter_buffer_chain
                        time:   [62.588 ms 63.017 ms 63.621 ms]
hydroflo2_diamond_iter_tee_chain
                        time:   [59.979 ms 60.390 ms 60.894 ms]
hydroflo2_diamond_iter_tee_interleave
                        time:   [62.646 ms 62.937 ms 63.242 ms]
hydroflo2_diamond_iter_buffer_one
                        time:   [58.574 ms 58.916 ms 59.327 ms]
```


![image](https://github.com/user-attachments/assets/20367b2e-728a-4e1c-99cf-a4d65a7228f8)

benches/Cargo.toml

@@ -15,6 +15,7 @@ workspace = true
 [dev-dependencies]
 criterion = { version = "0.5.0", features = [ "async_tokio", "html_reports" ] }
 hydroflow = { path = "../hydroflow", features = [ "debugging" ] }
+nameof = "1.0.0"
 rand = "0.8.0"
 rand_distr = "0.4.3"
 seq-macro = "0.2.0"
@@ -62,3 +63,7 @@ harness = false
 [[bench]]
 name = "symmetric_hash_join"
 harness = false
+
+[[bench]]
+name = "words_diamond"
+harness = false

benches/README.md

@@ -11,3 +11,5 @@ Run specific benchmarks:
 ```
 cargo bench -p benches --bench reachability
 ```
+
+Wordlist is from https://github.com/dwyl/english-words/blob/master/words_alpha.txt