Add locale related files

Add `.weblate` config to make usage of wlc CLI tool easier.
Add `regen_POT_file.sh` to allow POT file update or regeneration.

Signed-off-by: Emily Mabrey <emabrey@tenacityaudio.org>

.weblate

@@ -0,0 +1,3 @@
+[weblate]
+url = https://hosted.weblate.org/api/
+translation = tenacity/tenacity

locale/regen_POT_file.sh

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+#!/bin/sh
+# Run this script with locale as the current directory
+set -o errexit
+echo ";; Recreating tenacity.pot using .h, .cpp and .mm files"
+for path in ../modules/mod-* ../libraries/lib-* ../include ../src ; do
+   find $path -name \*.h -o -name \*.cpp -o -name \*.mm
+done | LANG=c sort | \
+sed -E 's/\.\.\///g' |\
+xargs xgettext \
+--no-wrap \
+--default-domain=tenacity \
+--directory=.. \
+--keyword=_ --keyword=XO --keyword=XC:1,2c --keyword=XXO --keyword=XXC:1,2c --keyword=XP:1,2 --keyword=XPC:1,2,4c \
+--add-comments=" i18n" \
+--add-location=file  \
+--copyright-holder='Tenacity Contributors' \
+--package-name="tenacity" \
+--package-version='3.0.4' \
+--msgid-bugs-address="emabrey@tenacityaudio.org" \
+--add-location=file -L C -o tenacity.pot
+echo ";; Adding nyquist files to tenacity.pot"
+for path in ../plug-ins ; do find $path -name \*.ny -not -name rms.ny; done | LANG=c sort | \
+sed -E 's/\.\.\///g' |\
+xargs xgettext \
+--no-wrap \
+--default-domain=tenacity \
+--directory=.. \
+--keyword=_ --keyword=_C:1,2c --keyword=ngettext:1,2 --keyword=ngettextc:1,2,4c \
+--add-comments=" i18n" \
+--add-location=file  \
+--copyright-holder='Tenacity Contributors' \
+--package-name="tenacity" \
+--package-version='3.0.4' \
+--msgid-bugs-address="emabrey@tenacityaudio.org" \
+--add-location=file -L Lisp -j -o tenacity.pot
+#Disable PO file modification because it will hurt Weblate merge -- emabrey.
+#if test "${TENACITY_ONLY_POT:-}" = 'y'; then
+#    return 0
+#fi
+#echo ";; Updating the .po files - Updating Project-Id-Version"
+#for i in *.po; do
+#    sed -e '/^"Project-Id-Version:/c\
+#    "Project-Id-Version: tenacity 3.0.4\\n"' $i > TEMP; mv TEMP $i
+#done
+#echo ";; Updating the .po files"
+#sed 's/.*/echo "msgmerge --lang=& &.po tenacity.pot -o &.po";\
+#msgmerge --no-wrap --lang=& &.po tenacity.pot -o &.po;/g' LINGUAS | bash
+#echo ";; Removing '#~|' (which confuse Windows version of msgcat)"
+#for i in *.po; do
+#    sed '/^#~|/d' $i > TEMP; mv TEMP $i
+#done
+#echo ""
+echo ";; POT file generated"
+echo ""
+head -n 11 tenacity.pot | tail -n 3
+wc -l tenacity.pot