command: Add `themesDir` command argument to specify themes directory
command: Add `themesDir` command argument to specify themes directory

MarkDBlackwell/hugo,MarkDBlackwell/hugo,mitchchn/hugo,mdhender/hugo,digitalcraftsman/hugo,gohugoio/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,fedelibre/hugo,anthonyfok/hugo,mitchchn/hugo,tubo028/hugo,digitalcraftsman/hugo,anthonyfok/hugo,gohugoio/hugo,mdhender/hugo,tubo028/hugo,fedelibre/hugo,mayah/hugo,gohugoio/hugo,anthonyfok/hugo,mdhender/hugo,mayah/hugo