Improve sorting by popularity in tag selector

[mdrlzy]

Right now, every time we change tags, we count their popularity by resources in TagsSelectorPresenter.
We can collect this statistics in StatsStorage and use it right away
But before that, we need to make sure that statistics are collected correctly.
For example, deleting a resource without our app. In this case, we need to reduce popularity of tags of this resource.

    private fun sortByPopularity(
        tagsOfSelectedResources: List<TagItem>,
        tagsOfUnselectedResources: List<TagItem>,
        tagItemsByResources: Map<ResourceId, Set<TagItem>>
    ) {
        val tagsOfSelectedResPopularity = Popularity
            .calculate(tagsOfSelectedResources)

        val tagsOfUnselectedResPopularity = Popularity
            .calculate(tagsOfUnselectedResources)

        val tagsPopularity = Popularity
            .calculate(tagItemsByResources.values.flatten())