2.0.0.alpha7

• restructured (no change to API)
• added copyright and spdx license headers
• housekeeping
• cleaned up whitespace
• unused variables
• unused imports
• renamed shadowed builtins
• applied PEP8
• linted with pylint, isort
• updated/removed po file comments and metadata
• moved shared/common constants to their own module
• refactored json rpc requests and moved to a common module
• refactored logging and moved to a common module
• refactored hash generation and moved to a common module
• refactored file handling and moved to a common module
• removed any unnecessary string encoding/decoding
• removed duplicate code
• assorted minor fixes
• updated settings.xml to Kodi's new settings format
• added to Weblate for translations
• added ::ENABLE:: to enable an add-on, used like ::INSTALL::