build: add spec and gear

.gear/rules

+spec: .gear/ximperconf.spec
+tar: .
+tar: vendor name=@name@-development-@version@ base=vendor

.gear/ximperconf.spec

+Name: ximperconf
+Version: 0.1.0
+Release: eter0
+License: GPL-3.0
+
+Summary: Ximper Linux Configuration Tool
+
+Group: System/Configuration/Other
+
+Url: https://gitlab.eterfund.ru/ximperlinux/ximperconf
+Vcs: https://gitlab.eterfund.ru/ximperlinux/ximperconf.git
+
+Source: %name-%version.tar
+Source1: %name-development-%version.tar
+
+BuildRequires(pre): rpm-macros-meson
+
+BuildRequires: rpm-build-golang
+BuildRequires: meson
+
+BuildRequires: pkgconfig(systemd)
+
+%description
+%summary.
+
+%prep
+%setup -a1
+
+%build
+%meson
+%meson_build
+
+%install
+%meson_install
+%find_lang %name
+
+%post
+%systemd_user_post %name-presets.service
+
+%preun
+%systemd_user_preun %name-presets.service
+
+%postun
+%systemd_user_postun %name-presets.service
+
+%files -f %name.lang
+%_bindir/%name
+
+%_datadir/bash-completion/completions/%name
+%_datadir/zsh/site-functions/_%name
+%_datadir/fish/vendor_completions.d/%name.fish
+
+%_userunitdir/%name-presets.service
+
+%changelog
+* Sat Apr 25 2026 Kirill Unitsaev <fiersik@altlinux.org> 0.1.0-eter0
+- Initial build