Add first draft of entry

lua/telescope/entry.lua

@@ -0,0 +1,27 @@
+local Entry = {}
+Entry.__index = Entry
+
+-- TODO: Can we / should we make it so that "display" and "ordinal" are just values, instead of functions.
+--          It seems like that's what you'd want... No need to call the functions a million times.
+
+-- Pass in a table, that contains some state
+--  Table determines it's ordinal value
+function Entry:new(line_or_obj)
+  if type(line_or_obj) == "string" then
+    return setmetatable({
+      valid = line_or_obj ~= "",
+
+      value = line_or_obj,
+      ordinal = line_or_obj,
+      display = line_or_obj,
+    }, self)
+  else
+    return line_or_obj
+  end
+end
+
+function Entry:__tostring()
+  return "<" .. self.display .. ">"
+end
+
+return Entry