added the touch app

halyde/apps/helpdb/touch.txt

@@ -0,0 +1,6 @@
+Usage: touch [FLAGS] [FILE]
+Creates a file with empty content.
+
+  FLAGS               Specifies extra options when executing the command.
+    -o, --overwrite   Allows emptying out a file if it already exists.
+  FILE                The path of the file to create.²

halyde/apps/touch.lua

@@ -0,0 +1,25 @@
+local cliparse = require("cliparse")
+cliparse.config({
+  ["o"] = 0,
+  ["overwrite"] = 0,
+})
+local parsed = cliparse.parse(...)
+local file = parsed.args[1]
+local fs = require("filesystem")
+local shell = require("shell")
+
+if not file then
+  return shell.run("help touch")
+end
+
+if file:sub(1, 1) ~= "/" then
+  file = fs.concat(shell.getWorkingDirectory(), file)
+end
+
+if fs.exists(file) and not (parsed.flags.o or parsed.flags.overwrite) then
+  return print("\x1b[91mFile already exists.\n│  To empty file contents, use -o.")
+end
+
+local handle = fs.open(file, "w")
+handle:write("") -- just in case
+handle:close()