chore: add vendor dependencies for kauma build

vendor/once_cell/Cargo.toml

@@ -0,0 +1,118 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.60"
+name = "once_cell"
+version = "1.20.2"
+authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
+build = false
+exclude = [
+    "*.png",
+    "*.svg",
+    "/Cargo.lock.msrv",
+    "rustfmt.toml",
+]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "Single assignment cells and lazy values."
+documentation = "https://docs.rs/once_cell"
+readme = "README.md"
+keywords = [
+    "lazy",
+    "static",
+]
+categories = [
+    "rust-patterns",
+    "memory-management",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/matklad/once_cell"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--generate-link-to-definition"]
+
+[lib]
+name = "once_cell"
+path = "src/lib.rs"
+
+[[example]]
+name = "bench"
+path = "examples/bench.rs"
+required-features = ["std"]
+
+[[example]]
+name = "bench_acquire"
+path = "examples/bench_acquire.rs"
+required-features = ["std"]
+
+[[example]]
+name = "lazy_static"
+path = "examples/lazy_static.rs"
+required-features = ["std"]
+
+[[example]]
+name = "reentrant_init_deadlocks"
+path = "examples/reentrant_init_deadlocks.rs"
+required-features = ["std"]
+
+[[example]]
+name = "regex"
+path = "examples/regex.rs"
+required-features = ["std"]
+
+[[example]]
+name = "test_synchronization"
+path = "examples/test_synchronization.rs"
+required-features = ["std"]
+
+[[test]]
+name = "it"
+path = "tests/it/main.rs"
+
+[dependencies.critical-section]
+version = "1.1.3"
+optional = true
+
+[dependencies.parking_lot_core]
+version = "0.9.10"
+optional = true
+default-features = false
+
+[dependencies.portable-atomic]
+version = "1.8"
+optional = true
+default-features = false
+
+[dev-dependencies.critical-section]
+version = "1.1.3"
+features = ["std"]
+
+[dev-dependencies.regex]
+version = "1.10.6"
+
+[features]
+alloc = ["race"]
+atomic-polyfill = ["critical-section"]
+critical-section = [
+    "dep:critical-section",
+    "portable-atomic",
+]
+default = ["std"]
+parking_lot = ["dep:parking_lot_core"]
+portable-atomic = ["dep:portable-atomic"]
+race = []
+std = ["alloc"]
+unstable = []