Add automatic writing of coordinates in SI files

[YHordijk]

It would be nice to have a function/module for writing results to a word file, for example for supporting information files.
I propose to add a new module, TCutility.report, that will be responsible for generating these files. I think the following syntax would be nice:

from TCutility import report, results

with report.SI('path/to/si.docx', 'w+') as si:
    si.add_section('Description of following systems')
    res = results.read('path/to/calc')
    si.write_xyz(res, 'name of mol')
    res2 = results.read('path/to/second/calc')
    si.write_xyz(res2, 'name of second mol')

It might also be nice to load a calculation if the path is given instead of a Result object:

from TCutility import report, results

with report.SI('path/to/si.docx', 'w+') as si:
    si.add_section('Description of following systems')
    si.write_xyz('path/to/calc', 'name of mol')
    si.write_xyz('path/to/second/calc', 'TS: F— + CH3F')

This should yield something like:

File: path/to/si.docx

Description of following systems

name of mol
E = —639.8 kcal mol^—1
G = —632.6 kcal mol^—1
H = —612.0 kcal mol^—1

C      0.00000000     0.00000000     0.37180722
F     -0.00000000    -0.00000000     1.82698320
H     -0.51522847    -0.89240188     0.02344328
H     -0.51522847     0.89240188     0.02344328
H      1.03045693     0.00000000     0.02344328
F     -0.00000000    -0.00000000    -2.26912024

TS: F^— + CH₃F
E = —631.7 kcal mol^—1
G = —623.2 kcal mol^—1
H = —605.0 kcal mol^—1
ν_imag = 403i cm^—1

C      0.00000000     0.00000000     0.00000000
F     -0.00000000    -0.00000000     1.86154599
H      0.53782492     0.93154009     0.00000000
H      0.53782492    -0.93154009     0.00000000
H     -1.07564984    -0.00000000     0.00000000
F     -0.00000000    -0.00000000    -1.86154599