Using async_trait crate to let us create asynchronous trait functions

this is only temporary until the rust standard changes

server-api/db/Cargo.lock

@@ -30,6 +30,17 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
 
+[[package]]
+name = "async-trait"
+version = "0.1.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "687c230d85c0a52504709705fc8a53e4a692b83a2184f03dae73e38e1e93a783"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.0.1"
@@ -149,6 +160,12 @@ dependencies = [
  "time 0.1.44",
 ]
 
+[[package]]
+name = "const_fn"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce90df4c658c62f12d78f7508cf92f9173e5184a539c10bfe54a3107b3ffd0f2"
+
 [[package]]
 name = "core-foundation"
 version = "0.7.0"
@@ -250,6 +267,7 @@ dependencies = [
 name = "db"
 version = "0.1.0"
 dependencies = [
+ "async-trait",
  "mysql_async",
 ]
 
@@ -494,9 +512,9 @@ checksum = "755456fae044e6fa1ebbbd1b3e902ae19e73097ed4ed87bb79934a867c007bc3"
 
 [[package]]
 name = "libz-sys"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af67924b8dd885cccea261866c8ce5b74d239d272e154053ff927dae839f5ae9"
+checksum = "23b34178653005c1181711c333f0e5604a14a1b5115c814fd42304bdd16245e0"
 dependencies = [
  "cc",
  "pkg-config",
@@ -664,7 +682,7 @@ dependencies = [
  "serde_json",
  "sha1",
  "sha2",
- "time 0.2.16",
+ "time 0.2.17",
  "twox-hash",
  "uuid",
 ]
@@ -1225,11 +1243,11 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a51cadc5b1eec673a685ff7c33192ff7b7603d0b75446fb354939ee615acb15"
+checksum = "ca7ec98a72285d12e0febb26f0847b12d54be24577618719df654c66cadab55d"
 dependencies = [
- "cfg-if",
+ "const_fn",
  "libc",
  "standback",
  "stdweb",