create a list of queries documenting just bare pml-tq

[Ansa211]

without any (or very little, such as node types) corpus-specific syntax

then add this list to the public queries list of all corpora

[Ansa211]

ideas for topics to cover:

• [ ] simulate the simple query modes of KonText: lemma, word_form, phrase (= sequence of word forms), word part, simple (=lemma or word_form)

[matyaskopp]

• [ ] empty result reasons https://github.com/ufal/perl-pmltq-web/issues/90