vim-patch:9.1.0532: filetype: Cedar files not recognized

Problem:  filetype: Cedar files not recognized
Solution: Detect '*.cedar' files as cedar filetype
          (Riley Bruins)

References: https://github.com/cedar-policy

closes: vim/vim#15148

15addb24dd

Co-authored-by: Riley Bruins <ribru17@hotmail.com>

runtime/lua/vim/filetype.lua

@@ -261,6 +261,7 @@ local extension = {
   cdc = 'cdc',
   cdl = 'cdl',
   toc = detect_line1('\\contentsline', 'tex', 'cdrtoc'),
+  cedar = 'cedar',
   cfc = 'cf',
   cfm = 'cf',
   cfi = 'cf',