Wip - compute authorization header

Author: JamieTsai1024

Cargo.lock

@@ -41,7 +41,7 @@ dns-resolver = ["dep:hickory-resolver", "dep:hickory-proto"]
 cert-key-password = ["dep:pem", "dep:pkcs8"]
 
 # Enable support for MONGODB-AWS authentication.
-aws-auth = ["dep:reqwest", "aws-credential-types", "aws-types", "aws-config"]
+aws-auth = ["dep:reqwest", "aws-credential-types", "aws-types", "aws-config", "aws-sigv4", "http"]
 
 # Enable support for on-demand Azure KMS credentials.
 azure-kms = ["dep:reqwest"]
@@ -143,6 +143,17 @@ version = "=1.73"
 optional = true
 default-features = false
 
+[dependencies.aws-sigv4]
+version = "1.3.3"
+optional = true
+default-features = false
+features = ["sign-http"]
+
+[dependencies.http]
+version = "1.3"
+optional = true
+default-features = false
+
 [dependencies.bson2]
 git = "https://github.com/mongodb/bson-rust"
 branch = "2.15.x"