Fix CI failure for io.exciting.inputs owing to scipy constant update

[DanielYang59]

Summary

• Fix CI failure for io.exciting.inputs owing to scipy constant update MAINT: constants: update codata values to 2022 scipy/scipy#21605

  pymatgen/src/pymatgen/io/exciting/inputs.py

  Lines 61 to 62 in 1abc459

  	# define conversion factor between Bohr radius and Angstrom
  	bohr2ang = const.value("Bohr radius") / const.value("Angstrom star")

• Add types

[DanielYang59]

This is a bit hacky but I didn't find any better way to compare XML files which may content numerical (mostly float) value, if anyone knows a better solution, feel free to comment :)

pymatgen/tests/files/io/exciting/input_exciting2.xml

Lines 1 to 20 in 1abc459

	<input xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xml.exciting-code.org/excitinginput.xsd">
	<title>Si2</title>
	<structure speciespath="./">
	<crystal scale="1.8897543760313331">
	<basevect> 3.84000000 0.00000000 0.00000000</basevect>
	<basevect> 1.92000000 2.71529004 -1.92000000</basevect>
	<basevect> 0.00000000 0.00000000 3.84000000</basevect>
	</crystal>
	<species speciesfile="Si.xml">
	<atom coord=" 0.00000000 0.00000000 0.00000000" />
	<atom coord=" 0.75000000 0.50000000 0.75000000" />
	</species>
	</structure>
	<grst do="fromscratch" ngridk="8 8 8" xctype="GGA_PBE_SOL" gmaxvr="14.0" />
	<xs xstype="BSE" ngridk="4 4 4" ngridq="4 4 4" nempty="30" gqmax="3.0" broad="0.07" tevout="true">
	<energywindow intv="0.0 1.0" points="1200" />
	<screening screentype="full" nempty="100" />
	<BSE bsetype="singlet" nstlbse="1 5 1 4" />
	</xs>
	</input>

Adding a new dependency xmldiff would apparently be super overkilling (also not sure if it checks exactly match only), meanwhile writing a helper function may not be of general interest for now AFAIK?