* Remove tree-sitter/sdb git submodules and move them to meson subprojects/wraps
* Use meson subprojects/wraps to get capstone
* Remove capstone patches as they are already applied to rizinorg/capstone repository
* Use meson from master branch to create the release tarball, as all released versions so far have a bug that prevent wrap-git to be patched correctly when creating the tarball with meson dist
* Add check_meson_subproject script to do a quick check if the currently downloaded subprojects are updated
* Add subprojects_check meson option to skip the check_meson_subproject script
* Update documentation to remove references to git submodules.
* Move radare2-shell-parser/tree-sitter into shlr
* compile new shell parser by default, available with cfg.newshell variable
* Add README for radare2-shell-parser
* Improve CI
* Add gitattributes file
