adds warnings for extra manifest keys (#1278)

* adds warnings for extra manifest keys

* default to warn log level if env not specified

backend/Cargo.lock

@@ -404,14 +404,31 @@ dependencies = [
 
 [[package]]
 name = "ciborium"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de6836a1b6197d8acdaac74a01af077a26aa6953d2e9251eef061c646b0d432c"
+checksum = "b0c137568cc60b904a7724001b35ce2630fd00d5d84805fbb608ab89509d788f"
 dependencies = [
- "half",
+ "ciborium-io",
+ "ciborium-ll",
  "serde",
 ]
 
+[[package]]
+name = "ciborium-io"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "346de753af073cc87b52b2083a506b38ac176a44cfb05497b622e27be899b369"
+
+[[package]]
+name = "ciborium-ll"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213030a2b5a4e0c0892b6652260cf6ccac84827b83a85a534e178e3906c4cf1b"
+dependencies = [
+ "ciborium-io",
+ "half",
+]
+
 [[package]]
 name = "cipher"
 version = "0.3.0"
@@ -867,6 +884,7 @@ dependencies = [
  "http",
  "hyper",
  "hyper-ws-listener",
+ "imbl",
  "indexmap",
  "isocountry",
  "itertools 0.10.1",