Add Arch Linux and PKGBUILD pages

pages/02.linux/arch-linux/default.en.md

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+---
+title: "Arch Linux"
+visible: true
+---
+
+[toc]

pages/02.linux/arch-linux/pkgbuild/default.en.md

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+---
+title: PKGBUILD
+visible: true
+---
+
+[toc]
+
+_TODO:_ patching  
+https://wiki.archlinux.org/index.php?title=Patching_packages&useskinversion=1
+
+Get hashsums:  
+`$ makepkg -g`
+
+Build package:  
+`$ makepkg`
+
+Build package with AUR dependencies:  
+_Officially, AUR-helpers are not recommended and AUR-dependencies should be downloaded manually_  
+`$ paru -U`  
+Afterwards install with `$ paru -U <package>.tar.zst`
+
+Install dependencies:  
+`$ makepkg -s`
+
+Install package after successful build:  
+`$ makepkg -i`
+
+Just extract package and run `prepare()`  
+`--nobuild`
+
+Don't extract package and don't run `prepare()`  
+`--noextract`
+
+Create SRCINFO  
+`$ makepkg --printsrcinfo > .SRCINFO`
+
+Using paru to build package in clean chroot for testing  
+https://old.reddit.com/r/archlinux/comments/tkeuy5/using_paru_u_chroot_to_build_a_pkgbuild_in_a/
+
+## Upload new package
+
+Initialise new repo with `master` branch
+
+[shuser]
+
+```
+git -c init.defaultbranch=master init
+```
+
+[/shuser]
+
+Add remote for AUR and fetch to initialise
+
+[shuser]
+
+```
+git remote add aur ssh://aur@aur.archlinux.org/[PKGBASE].git
+git fetch aur
+```
+
+[/shuser]