[docs] feat: add readme and license

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>

rename_regions_from_markers.lua

@@ -6,7 +6,7 @@ ardour {
     description = [[Rename selected regions using track name and label of range marker at region start]]
 }
 
-function factory ()
+function factory()
     -- there is currently no direct way to find the track
     -- corresponding to a [selected] region
     function find_track_for_region(region_id)
@@ -20,7 +20,7 @@ function factory ()
         assert (0) -- can't happen, region must be in a playlist
     end
 
-    return function ()
+    return function()
         local sel = Editor:get_selection () -- get current selection
         local loc = Session:locations()     -- get locations