add pyo3-python-tracing-subscriber (again, using pyo3 0.21)

Summary:
D68726574, but downgraded pyo3 to 0.21 using my patch

diffs from the original commit and this commit: {P1721290419}

Reviewed By: diliop

Differential Revision: D68846046

fbshipit-source-id: d01c5acabd4ffd953c482d0e3b14fd919ddd447d

Cargo.toml

@@ -13,6 +13,7 @@ perf-event = { version = "0.4", git = "https://github.com/krallin/perf-event.git
 perf-event-open-sys = { version = "4.0", git = "https://github.com/krallin/perf-event.git", rev = "86224a9bc025d5d19f719542f27c8c629a08b167" }
 profiling = { version = "1.0.16", git = "https://github.com/aclysma/profiling.git", rev = "1b3e20c8e59eddbb6ae0d64fff849d07a903dd0c" }
 pyo3-build-config = { package = "pyo3-build-config", version = "0.21.2", git = "https://github.com/fbsource/pyo3", rev = "ff94a09031cc29d88d57ae3c846e5b871497aeb9" }
+pyo3-python-tracing-subscriber = { version = "0.1.0", git = "https://github.com/guswynn/pyo3-python-tracing-subscriber", rev = "2f67354200fe50c9a2438187c1e4e2e25abe8683" }
 quickcheck = { git = "https://github.com/jakoschiko/quickcheck", rev = "6ecdf5bb4b0132ce66670b4d46453aa022ea892c" }
 tree-sitter-bash = { git = "https://github.com/cfsmp3/tree-sitter-bash", rev = "4e9968457cd1ee5a51f8ab875cc2fcaaf7294e94" }
 tree-sitter-c = { git = "https://github.com/cfsmp3/tree-sitter-c", rev = "d01f584b67e581e9888b4b8e71e7150fd3867e38" }