Merge branch 'sd-notify' into 'main'

Use systemd notify protocol to signal startup, when requested in env

See merge request iwj/hippotat!58

diff --cc Cargo.lock
index d5dac28f8f0b3310d63874a1c18c365d4ee48e3d,d247bf2bf4b64e324efe720f5b00662f160f80bd..f0f537c2c1d28729041c3a699c0215550ce497d8
--- 1/Cargo.lock
--- 2/Cargo.lock
+++ b/Cargo.lock
@@@ -1544,14 -1497,23 +1545,23 @@@ version = "1.2.0
  source = "registry+https://github.com/rust-lang/crates.io-index"
  checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
  
+ [[package]]
+ name = "sd-notify"
+ version = "0.4.5"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+ checksum = "b943eadf71d8b69e661330cb0e2656e31040acf21ee7708e2c238a0ec6af2bf4"
+ dependencies = [
+  "libc",
+ ]
+ 
  [[package]]
  name = "security-framework"
 -version = "2.11.1"
 +version = "3.7.0"
  source = "registry+https://github.com/rust-lang/crates.io-index"
 -checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
 +checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
  dependencies = [
   "bitflags",
 - "core-foundation",
 + "core-foundation 0.10.1",
   "core-foundation-sys",
   "libc",
   "security-framework-sys",

diff --cc Cargo.toml
Simple merge