feature(vim-shfmt): add shellcheck, add vim-shfmt to vim-essentials

vim-essentials/README.md

@@ -23,6 +23,7 @@ It includes many of the vim plugins available on webinstall.dev such as:
 - [vim-viminfo](/vim-viminfo)
 - [vim-lastplace](/vim-lastplace)
 - [vim-spell](/vim-spell)
+- [vim-shfmt](/vim-shfmt)
 - [vim-ale](/vim-ale)
 - [vim-prettier](/vim-prettier)
 - [vim-whitespace](/vim-whitespace)

vim-essentials/install.sh

@@ -9,6 +9,7 @@ function __init_vim_essentials() {
         vim-lastplace \
         vim-spell \
         vim-ale \
+        vim-shfmt \
         vim-prettier \
         vim-whitespace
     # done