add Python script used to analyze an ELF file to see instructions from ELF file

[stineje]

Wanted to create a script for use in my class to do a histogram on an ELF file. Seem to work well - ran on CoreMark:

Instruction usage in work/coremark.bare.riscv:

addi       3,097
lw         973
beq        867
sw         714
add        538
jal        499
lbu        329

[davidharrishmc]

Looks good. Can you make it pass the Lint above?

[jordancarlin]

Good reminder that I should add the pre-commit hook for ruff to our flow so that it will automatically fix these simple things (or at least warn you that there are issues) when you commit.

[rosethompson]

Can you also add the SPDX header?