make utils.js

[sappelhoff]

wrapping up repeated functions in a utils.js module

e.g.,
--> parsing sections and key-value pairs ... make available in dictionary like datatype

--> get all paths as a dictionary ... so "filepaths.vhdr" or "filepaths.eeg" ...

[sappelhoff]

some work in: 4b2b2e9

and 0b13861