Bug 1764698 - Move LanguageDetector.jsm and related files to toolkit. r=robwu

.clang-format-ignore

.eslintignore

browser/components/translation/TranslationChild.jsm

browser/components/translation/moz.build

browser/installer/allowed-dupes.mn

dom/security/nsContentSecurityUtils.cpp

toolkit/components/extensions/ExtensionContent.jsm

toolkit/components/extensions/parent/ext-i18n.js

toolkit/components/extensions/test/xpcshell/test_ext_i18n.js

.../components/extensions/test/xpcshell/xpcshell-content.ini

toolkit/components/moz.build

toolkit/components/reader/ReaderMode.jsm

toolkit/components/translation/LanguageDetector.jsm

toolkit/components/translation/cld2/Makefile

toolkit/components/translation/cld2/cld-worker.js

toolkit/components/translation/cld2/cld-worker.js.mem

toolkit/components/translation/cld2/cld.idl

toolkit/components/translation/cld2/cldapp.cc

toolkit/components/translation/cld2/internal/LICENSE

.../components/translation/cld2/internal/cld2_dynamic_data.h