added get_one, get_popular datasource methods, added respective routes

backend/public/Cargo.lock

@@ -1057,6 +1057,7 @@ dependencies = [
  "serde_json",
  "sqlx",
  "tokio",
+ "tower-http",
  "tracing",
  "tracing-subscriber",
 ]
@@ -1803,6 +1804,22 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-http"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8437150ab6bbc8c5f0f519e3d5ed4aa883a83dd4cdd3d1b21f9482936046cb97"
+dependencies = [
+ "bitflags",
+ "bytes",
+ "http",
+ "http-body",
+ "pin-project-lite",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
 [[package]]
 name = "tower-layer"
 version = "0.3.3"