Translate to monolithic architecture

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

backend/Cargo.toml

@@ -1,7 +1,31 @@
-[workspace]
+[package]
+name    = "backend"
+version = "0.1.0"
+edition = "2021"
 
-resolver = "2"
-members = [
-    "common",
-    "assets",
-]
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+apca = "0.27.2"
+axum = "0.6.20"
+dotenv = "0.15.0"
+sqlx = { version = "0.7.1", features = [
+    "uuid",
+    "time",
+    "postgres",
+    "runtime-tokio",
+] }
+tokio = { version = "1.32.0", features = [
+    "macros",
+    "rt-multi-thread",
+] }
+deadpool = { version = "0.9.5", features = [
+    "rt_tokio_1",
+] }
+serde = "1.0.188"
+log = "0.4.20"
+serde_json = "1.0.105"
+log4rs = "1.2.0"
+time = { version = "0.3.27", features = [
+    "serde",
+] }