Fixes issues with printing/serializing notes

[mackncheesiest]

Related issue:
#300

• Adds ability to clone NoteDetails objects to fixe a potential segfault in LIEF::ELF::Note::dump
• Adds the ability to write notes that are manually added by the user through lief.add(life.ELF.Note(...)) to resulting binary by fixing an alignment bug
• Adds the ability to write NT_GNU_HWCAP and NT_UNKNOWN notes to resulting binary

Example that demonstrates updated functionality:

# mybin.bin only has a GNU ABI Tag note to begin with
mybin = lief.parse("mybin.bin")
mybin.add(lief.ELF.Note("GNU", lief.ELF.NOTE_TYPES.BUILD_ID, [0xb, 0xe, 0xe, 0xf]))
mybin.add(lief.ELF.Note("GNU", lief.ELF.NOTE_TYPES.HWCAP, [0, 0, 0, 0, 0, 0, 0, 0]))
mybin.add(lief.ELF.Note("CustomStr", lief.ELF.NOTE_TYPES.UNKNOWN, list(map(ord, "Str2"))))
print(mybin)
mybin.write("modified.bin")
modified = lief.parse("modified.bin")
print(modified)

Externally, readelf -n modified.bin also supports displaying the notes that are added

[romainthomas]

Thank you @mackncheesiest for the PR!
The copy implementation of note details is ok for me.

[mackncheesiest]

Thanks @romainthomas !
I believe the other commits are finalized and able to be reviewed whenever you have the time.

[romainthomas]

Perfect!