Add project size to compile output

Thanks to @vslinuxdotnet for digging into this!  Adds the compiled
sketch RAM and flash usage to the output.

Fixes #17

boards.txt

@@ -12,7 +12,8 @@ rpipico.build.board=RPI_PICO
 rpipico.build.mcu=cortex-m0plus
 rpipico.build.variant=rpipico
 rpipico.upload.tool=uf2conv
-rpipico.upload.maximum_data_size=81920
+rpipico.upload.maximum_size=2093056
+rpipico.upload.maximum_data_size=262144
 rpipico.upload.wait_for_upload_port=true
 rpipico.upload.erase_cmd=
 rpipico.serial.disableDTR=false

platform.txt

@@ -119,8 +119,8 @@ recipe.output.save_file={build.project_name}.{build.variant}.{build.preferred_ou
 
 ## Compute size
 recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"
-recipe.size.regex=\.text\s+([0-9]+).*
-
+recipe.size.regex=^(?:\.boot2|\.text|\.rodata|\.ARM\.extab|\.ARM\.exidx)\s+([0-9]+).*
+recipe.size.regex.data=^(?:\.data|\.bss|\.ram_vector_table|\.uninitialized_data)\s+([0-9]+).*
 
 tools.uf2conv.path=
 # Because the variable expansion doesn't allow one tool to find another, the following lines