Everywhere: Rename {Deprecated => Byte}String

This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')

Userland/Libraries/LibSQL/TupleDescriptor.h

@@ -13,9 +13,9 @@
 namespace SQL {
 
 struct TupleElementDescriptor {
-    DeprecatedString schema { "" };
-    DeprecatedString table { "" };
-    DeprecatedString name { "" };
+    ByteString schema { "" };
+    ByteString table { "" };
+    ByteString name { "" };
     SQLType type { SQLType::Text };
     Order order { Order::Ascending };
 
@@ -29,7 +29,7 @@ struct TupleElementDescriptor {
     }
     void deserialize(Serializer& serializer)
     {
-        name = serializer.deserialize<DeprecatedString>();
+        name = serializer.deserialize<ByteString>();
         type = (SQLType)serializer.deserialize<u8>();
         order = (Order)serializer.deserialize<u8>();
     }
@@ -39,9 +39,9 @@ struct TupleElementDescriptor {
         return sizeof(u32) + name.length() + 2 * sizeof(u8);
     }
 
-    DeprecatedString to_deprecated_string() const
+    ByteString to_byte_string() const
     {
-        return DeprecatedString::formatted("  name: {} type: {} order: {}", name, SQLType_name(type), Order_name(order));
+        return ByteString::formatted("  name: {} type: {} order: {}", name, SQLType_name(type), Order_name(order));
     }
 };
 
@@ -90,12 +90,12 @@ public:
         return len;
     }
 
-    DeprecatedString to_deprecated_string() const
+    ByteString to_byte_string() const
     {
-        Vector<DeprecatedString> elements;
+        Vector<ByteString> elements;
         for (auto& element : *this)
-            elements.append(element.to_deprecated_string());
-        return DeprecatedString::formatted("[\n{}\n]", DeprecatedString::join('\n', elements));
+            elements.append(element.to_byte_string());
+        return ByteString::formatted("[\n{}\n]", ByteString::join('\n', elements));
     }
 
     using Vector<TupleElementDescriptor>::operator==;