Added examples and better error reporting

+ The field that errors is now reported
+ The formats/ dir contains all predefined formats
  + Includes CCSDS packet for now
+ There appears to be an issue with bit formatting, the APID field is not being parsed correctly (upper 8 bits is not being factored in

src/byte_stream/mod.rs

@@ -8,7 +8,7 @@ pub enum ByteStreamError {
 impl Display for ByteStreamError {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         match self {
-            ByteStreamError::OutOfRange => write!(f, "Request values out of range")
+            ByteStreamError::OutOfRange => write!(f, "Requested values out of range")
         }
     }
 }
@@ -44,7 +44,7 @@ impl ByteStream {
             byte_count
         };
 
-        if bytes_needed > self.data.len() || bytes_needed + byte_ndx > self.data.len() {
+        if bytes_needed > self.data.len() || (bytes_needed + byte_ndx) > self.data.len() {
             return Err(ByteStreamError::OutOfRange);
         }