Add new "make size_components" and "make size_files" targets for analysing makeup of the ELF file.
Plain "make size" output now looks like this:
Total sizes:
DRAM .data size: 11156 bytes
DRAM .bss size: 22304 bytes
Used static DRAM: 33460 bytes ( 294220 available, 10.2% used)
Used static IRAM: 80480 bytes ( 50592 available, 61.4% used)
Flash code: 421463 bytes
Flash rodata: 103824 bytes
Total image size:~ 616923 bytes (.bin may be padded larger)
