Debug: revert cortex debug to lxml and drop DWT (#2651)

* Debug: revert cortex debug to lxml

* Debug: update PyCortexMDebug readme

* fbt: moved "debug" dir to "scripts" subfolder

* ufbt: added missing debug_other & debug_other_blackmagic targets; github: fixed script bundling

* lint: fixed formatting on debug scripts

* vscode: updated configuration for debug dir changes

---------

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: hedger <hedger@nanode.su>

scripts/ufbt/site_tools/ufbt_state.py

@@ -78,10 +78,8 @@ def generate(env, **kw):
     env.SetDefault(
         # Paths
         SDK_DEFINITION=env.File(sdk_data["sdk_symbols"]),
-        FBT_DEBUG_DIR=pathlib.Path(
-            sdk_current_sdk_dir_node.Dir(sdk_components["debug.dir"]).abspath
-        ).as_posix(),
         FBT_SCRIPT_DIR=scripts_dir,
+        FBT_DEBUG_DIR=scripts_dir.Dir("debug"),
         LIBPATH=sdk_current_sdk_dir_node.Dir(sdk_components["lib.dir"]),
         FW_ELF=sdk_current_sdk_dir_node.File(sdk_components["firmware.elf"]),
         FW_BIN=sdk_current_sdk_dir_node.File(sdk_components["full.bin"]),