xcodebuild.md: add page (#1008)
xcodebuild.md: add page (#1008)

* Create xcodebuild.md

xcodebuild

* xcodebuild.md: shorten page

* xcodebuild.md: use token formatting

* xcodebuild.md: remove xcrun command

* xcodebuild.md: fix linting and reword some descriptions

* xcodebuild: change tokens to match the guidelines

* xcodebuild: remove unclear part the first example's description

zoisom/tldr,AgamAgarwal/tldr,Phizho/tldr,slash3b/tldr,deekim/tldr,felixonmars/tldr,cptdeka10/tldr,Phizho/tldr,katekyan/tldr,UncommonPleb/tldr,cptdeka10/tldr,UncommonPleb/tldr,felixonmars/tldr,UncommonPleb/tldr,zoisom/tldr,deekim/tldr,felixonmars/tldr,slash3b/tldr,slash3b/tldr,cptdeka10/tldr,Phizho/tldr,deekim/tldr,zoisom/tldr,katekyan/tldr,katekyan/tldr,AgamAgarwal/tldr