Refactor class-*.php files as shared library files where applicable

[bobbingwide]

As part of the work to implement chart displays for slog ( admin ) and wp-top12 ( front end using pompey-chart or similar ) we need to refactor the class-*.php files as shared libraries.

Requirements

• slog and wp-top12 to use the same logic to display charts
• some functionality moved from wp-top12 to slog
• some functionality and the working directory forked from wp-top12 to a new repository - wp-top12-bloat

File	Converted?
class-csv-merger.php	downloads, merger, vt-stats, vt-top12
class-group-summary.php	vt-top12
class-IP-to-host.php	not used?
class-object-grouper.php	downloads, vt-stats, vt-top12
class-object-sorter-natural.php	not used?
class-object-sorter.php	downloads, vt-stats, vt-top12
class-object.php	downloads, vt-stats, vt-top12
class-plugin-extractor.php	scrape-blocks - Don't change?
class-vt-row-basic.php	vt-stats
class-vt-row.php	vt-top12
class-vt-stats-top12.php	vt-top12
class-vt-stats.php	vt-stats vt-top12
class-wp-org-downloads.php	downloads, myplugins
class-wp-org-plugins.php	wp-top12 - Don't change
class-wp-org-v12-downloads.php	blocker & wp-top12 - Don't change

Solution

• [x] Some of the files may not need to be converted to shared files.
• [x] A number of the routines will have to be updated to reflect this change.
• [ ] I don't think it's necessary to add deprecation logic
• [x] Initially change the logic to load the files from the libs folder
• [ ] Then use oik_require_lib() to load the shared libraries regardless of the plugin.
• [x] Test changed routines by running them.

[bobbingwide]

I also need to refactor

• the class-narrator.php file,
• used by scrape-blocks, vt-stats and Slog_Reporter
• is also used by oik-i18n ( 3 routines )
• and by some local routines in the private bw repository.