Refactor RDM BW LCD, update generators & fixes

Multiple changes across subsystems:

- lib-artnet: remove unused "network.h" include and drop DHCP status update in ArtNetNode::HandleIpProg (status2 modification removed).

- lib-rdmsubdevice: major refactor of RDMSubDeviceBwLcd:
  - Modernized API and variable names (constructor args, locals), replaced macros with constexprs, and cleaned up formatting/indentation.
  - Introduced common/utils/utils_hex.h and use common::hex::ToCharUppercase for hex conversion.
  - Improved DMX footprint constant usage, clearer boolean/variable names, and minor logic/style cleanups.
  - Updated copyright year range.

- lib-remoteconfig/http/content/generate_content.cpp:
  - Rename file pointers and locals to more descriptive names (file_content/file_includes/dir/etc.), reformat supported extensions array, and change include from "httpd/httpd.h" to "http/http.h".
  - Added "#undef NDEBUG" and adjusted fwrite/snprintf calls to use the renamed variables.
  - Cleaned up directory iteration and content conversion flow.

- lib-remoteconfig/src/http/khtmlinfos.cpp: extend copyright range and remove an ENTRY guarded by ENABLE_PHY_SWITCH.

Overall these commits are focused on refactoring for clarity, naming consistency, small behavior removal (DHCP status write), and code-style / copyright updates.

Author: vanvught

lib-artnet/src/json/artnetparams.cpp

@@ -29,7 +29,6 @@
 #include <cstdint>
 
 #include "artnetnode.h"
-#include "network.h"
 #include "json/artnetparams.h"
 #include "json/artnetparamsconst.h"
 #include "common/utils/utils_port.h"

lib-artnet/src/node/artnetnodehandleipprog.cpp

@@ -123,9 +123,6 @@ void ArtNetNode::HandleIpProg()
 
     if (is_changed)
     {
-        art_poll_reply_.status2 = static_cast<uint8_t>((art_poll_reply_.status2 & (~(artnet::Status2::kIpDhcp))) |
-                                                       (network::iface::Dhcp() ? artnet::Status2::kIpDhcp : artnet::Status2::kIpManualy));
-
         if (state_.send_art_poll_reply_on_change)
         {
             PollReplyQueueAdd(artnet::kPortAddressFirst, artnet::kPortAddressLast);