Normalise line endings

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Many country & province history files had mixed (CR/LF together with LF)
or inappropriate (i.e. lone CR) line endings. With this change all those
files use consistent line endings.

Something along the lines of git diff --ignore-space-at-eol Development is suggested to review the changes: it’ll take care of the
CR/LF noise by hiding all of it. This also goes some way into
demonstrating that most changes are intended conversions to native line
endings.

This should only leave lone CR changes in the diffs to review. (Unless
you are a time traveller using classic Mac OS I suppose. Hi!)

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The province changes were tested (i.e. borders and some of the province data looks right once in the game). I also looked at the child labour and political rights of a couple countries to make sure they were correct, as there is a CR line ending change around these in some of the country files.

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Obviously literally reviewing all files is out of the question. So together with the diff incantation here’s the other part of the puzzle to figure out the result is all right:

$ file HPM/**/*.{txt,csv} | grep -i 'terminator'
HPM/history/units/1861/NIP_oob.txt:                                    ASCII text, with no line terminators
HPM/news/news_battle_over_historical.txt:                              ASCII text, with no line terminators
HPM/localisation/00_HPM_decisions.csv:                                 Non-ISO extended-ASCII text, with very long lines, with LF, NEL line terminators
HPM/localisation/00_HPM_events.csv:                                    Non-ISO extended-ASCII text, with very long lines, with LF, NEL line terminators
HPM/localisation/00_HPM_News.csv:                                      Non-ISO extended-ASCII text, with very long lines, with LF, NEL line terminators
HPM/localisation/02_NNM_modifiers.csv:                                 Non-ISO extended-ASCII text, with very long lines, with LF, NEL line terminators
HPM/localisation/03_PDM_misc.csv:                                      ISO-8859 text, with LF, NEL line terminators

The first two files are described so because they consist of only one (non-terminated) line. The files that are alleged to contain mixed LF/NEL terminators really only contain LF terminators (expected from my Linux system), as well as a couple 0x85 characters which are really the ellipsis ('…') in the Windows-1252 encoding we expect from those localisation files.