Add recipe for 'Export Binary' feature

Author: rogerclarkmelbourne

STM32F1/platform.txt

@@ -108,6 +108,10 @@ recipe.size.regex=^(?:\.text|\.data|\.rodata|\.text.align|\.ARM.exidx)\s+([0-9]+
 
 recipe.size.regex.data=^(?:\.data|\.bss|\.noinit)\s+([0-9]+).*
 
+## Save Compiled Binary
+recipe.output.tmp_file={build.project_name}.bin
+recipe.output.save_file={build.project_name}.{build.variant}.bin
+
 # Uploader tools
 # -------------------