sample .env now uses redis

Also I'm moving the redis deps to db-lib
Lazy static now added for the sake of holding the only static ref we need/want
the hmac secret

server-api/.env

@@ -4,3 +4,4 @@ DATABASE_PASS=password
 DATABASE_USER=freechat_dev
 DATABASE_HOST=localhost
 DATABASE_PORT=3306
+REDIS_URL=redis://127.0.0.1:6379

server-api/Cargo.toml

@@ -21,11 +21,13 @@ getrandom = "0.1"
 bcrypt = "0.8"
 base64 = "0.12.1"
 rand = "0.7.3"
+jsonwebtoken = "7.2.0"
 
 clap = "2.32.2"
 
 serde_json = "1.0"
 serde = { version = "1.0.114", features = [ "derive" ] }
+lazy_static = "1.4.0"
 
 # Database library/interface
 db = { path = "db" }

server-api/db/Cargo.toml

@@ -8,9 +8,11 @@ edition = "2018"
 
 [dependencies]
 mysql_async = "0.23.1"
+redis = { version = "0.18.0", features = ["tokio-comp"] }
 async-trait = "0.1.40"
 
 serde_json = "1.0"
 serde = { version = "1.0.117", features = [ "derive" ] }
 
 chrono = "0.4.0"
+lazy_static = "1.4.0"