Add snippets for `.bat` (cmd) files

[EmilyGraceSeville7cf]

I suggest add the following snippets (I use Visual Studio Code syntax, but it must be translated to Visual Studio one).

All snippets describe commands without any additional flags.

Conditions

• trigger: if ([if])

  if ${operand1} ${operator|==,equ,neq,lss,leq,gtr,geq|} ${operand2} ${command}$0

• trigger: ifc ([if] [c]omplex)

  if ${operand1} ${operator|==,equ,neq,lss,leq,gtr,geq|} ${operand2} (
  ${command}$0
  )

• trigger: ife ([if] [e]lse)

  if ${operand1} ${operator|==,equ,neq,lss,leq,gtr,geq|} ${operand2} ${command1} else ${command2}$0

• trigger: ifec ([if] [e]lse [c]omplex)

  if ${operand1} ${operator|==,equ,neq,lss,leq,gtr,geq|} ${operand2} (
  ${command1}$0
  ) else (
  ${command2}
  )

Loops

• trigger: fo ([fo]r)

  for %%${item} in (${files}) do ${command}$0

• trigger: foc ([fo]r [c]omplex)

  for %%${item} in (${files}) do (
  ${command}$0
  )

"Functions"

• trigger: fu ([fu]nction)

  :${name}
  ${command}$0
  exit /b 0