platform: make debug_custom.json file customizable by board

platform.txt

@@ -160,6 +160,9 @@ build.openocdscript.esp32s3=esp32s3-builtin.cfg
 build.openocdscript.esp32c3=esp32c3-builtin.cfg
 build.openocdscript={build.openocdscript.{build.mcu}}
 
+# Debug plugin configuration
+build.debugconfig={build.mcu}.json
+
 # Custom build options
 build.opt.name=build_opt.h
 build.opt.path={build.path}/{build.opt.name}
@@ -201,8 +204,8 @@ recipe.hooks.postbuild.1.pattern=bash -c "[ {build.copy_jtag_files} -eq 0 ] || c
 recipe.hooks.postbuild.1.pattern.windows=cmd /c IF {build.copy_jtag_files}==1 COPY /y "{debug.server.openocd.scripts_dir}board\{build.openocdscript}" "{build.source.path}\debug.cfg"
 
 # Generate debug_custom.json
-recipe.hooks.postbuild.2.pattern=bash -c "[ {build.copy_jtag_files} -eq 0 ] || cp -f "{runtime.platform.path}"/tools/ide-debug/{build.mcu}.json "{build.source.path}"/debug_custom.json"
-recipe.hooks.postbuild.2.pattern.windows=cmd /c IF {build.copy_jtag_files}==1 COPY /y "{runtime.platform.path}\tools\ide-debug\{build.mcu}.json" "{build.source.path}\debug_custom.json"
+recipe.hooks.postbuild.2.pattern=bash -c "[ {build.copy_jtag_files} -eq 0 ] || cp -f "{runtime.platform.path}"/tools/ide-debug/{build.debugconfig} "{build.source.path}"/debug_custom.json"
+recipe.hooks.postbuild.2.pattern.windows=cmd /c IF {build.copy_jtag_files}==1 COPY /y "{runtime.platform.path}\tools\ide-debug\{build.debugconfig}" "{build.source.path}\debug_custom.json"
 
 # Generate chip.svd
 recipe.hooks.postbuild.3.pattern=bash -c "[ {build.copy_jtag_files} -eq 0 ] || cp -f "{runtime.platform.path}"/tools/ide-debug/svd/{build.mcu}.svd "{build.source.path}"/debug.svd"