Пакет estrlist: Информация

- add Rust implementation (estrlist-rs)
- spec: build Rust version using rpm-build-rust
- change license to MIT
- pack shell estrlist as estrlist.sh
- estrlist.sh: optimize difference, containts, intersection
- estrlist.sh: filter_strip_spaces: fix reading input without trailing newline
- install estrlist-rust as estrlist (with fallback to estrlist)

- estrlist: add new verbs: first, last
- estrlist: add new verbs: firstupper, tolower
- estrlist: optimize first and last, remove forks
- estrlist: optimize count, remove fork to wc
- estrlist: fix contains to use exact word matching
- estrlist: rename strip_spaces to strip and optimize it
- estrlist: fix glob expansion in word list functions
- estrlist: optimize reg_exclude, reg_wordexclude, reg_include
- estrlist: add reg_wordinclude, fix reg_include to match ^pattern$
- estrlist: fix contains to handle tabs and newlines
- estrlist: has_space now checks all whitespace

- estrlist: print out only to stderr if error
- estrlist: add contains