[Feature Request] "and" search for multliple tags

[NexZhu]

Memex's default search behavior for "#multiple #tags" is "or" logic, however "and" logic (intersection of results) is also very useful, which is Hypothesis's default search behavior, please add support for "and" logic in search, better yet, support writing query with some combinations of logical operators like "(#tag1 || #tag2) && #tag3". It could be enabled by default or only enabled in advanced query mode.