Lua: Add FilePath:isExecutableFile()

Change-Id: I1e0984d7cb0ccab6a0092019a3fe133de76c2c77
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/lua/meta/utils.lua

@@ -12,7 +12,6 @@ function utils.waitms(ms) end
 function utils.waitms_cb(ms, callback) end
 
 ---@class FilePath
----@field exists boolean True if the path exists
 utils.FilePath = {}
 
 ---@param path string The path to convert
@@ -38,6 +37,14 @@ function utils.FilePath:dirEntries(options) end
 ---@return string
 function utils.FilePath:toUserOutput() end
 
+---Returns whether the target exists
+---@return boolean
+function utils.FilePath:exists() end
+
+---Returns whether the target is a file and executable
+---@return boolean
+function utils.FilePath:isExecutableFile() end
+
 ---Returns the path portion of FilePath as a string in the hosts native format
 ---@return string
 function utils.FilePath:nativePath() end