feat: Add config for laravel/pint (#144)

* feat: Add config for laravel/pint

- Supports both mason and local composer install

* chore: Add pint to formatters list in readme

* Revert "chore: Add pint to formatters list in readme"

This reverts commit 8edb456.

* fix: remove unnecessary mason executable path

* fix: Change meta description to it's short form

lua/conform/formatters/pint.lua

@@ -0,0 +1,14 @@
+local util = require("conform.util")
+
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/laravel/pint",
+    description = "Laravel Pint is an opinionated PHP code style fixer for minimalists.",
+  },
+  command = util.find_executable({
+    "vendor/bin/pint",
+  }, "pint"),
+  args = { "$FILENAME" },
+  stdin = false,
+}