The main idea behind this, is move all plugin related stuff from
app.main.data.plugins into app.plugins.* and make them more consistent.
Also the intention that put all plugins related state under specific
prefix on the state.
* ♻️ Split history workspace.cljs to workspace/pages.cljs - rename file to target-name
* ♻️ Split history workspace.cljs to workspace/pages.cljs - rename source-file to git-split-temp
* ♻️ Split history workspace.cljs to workspace/pages.cljs - restore name of source-file
* ♻️ Cleanup after adding new ns, add exports
* ♻️ Move set-plugin-data to main.data.plugins
* 🐛 Possible bugfix, cherry-picked from commit 8f7c63d6e2c (conflict during refactor)
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Co-authored-by: Eva Marco <eva.marco@kaleidos.net>
