runtime(keymap): Add transliteration (buckwalter) arabic keymap

References:
- https://en.wikipedia.org/wiki/Buckwalter_transliteration
- http://qamus.org/transliteration.htm

closes: #18186

Signed-off-by: Rafael Ketsetsides <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: rafket

runtime/keymap/arabic_buckwalter.vim

@@ -0,0 +1,75 @@
+" Vim Keymap file for Arabic using Buckwalter Transliteration
+" see
+" http://qamus.org/transliteration.htm
+" https://en.wikipedia.org/wiki/Buckwalter_transliteration
+"
+" Created By:  Rafael Ketsetsides <[email protected]>
+" Last Update: 2025 Sep 02
+
+let b:keymap_name = "arabic_buckwalter"
+
+loadkeymap
+
+A	<char-0x0627>			" ALEF
+b	<char-0x0628>			" BEH
+p	<char-0x0629>			" TEH MARBUTA
+t	<char-0x062a>			" TEH
+v	<char-0x062b>			" THEH
+j	<char-0x062c>			" JEEM
+H	<char-0x062d>			" HAH
+x	<char-0x062e>			" KHAH
+d	<char-0x062f>			" DAL
+*	<char-0x0630>			" THAL
+r	<char-0x0631>			" REH
+z	<char-0x0632>			" ZAIN
+s	<char-0x0633>			" SEEN
+$	<char-0x0634>			" SHEEN
+S	<char-0x0635>			" SAD
+D	<char-0x0636>			" DAD
+T	<char-0x0637>			" TAH
+Z	<char-0x0638>			" ZAH
+E	<char-0x0639>			" AIN
+g	<char-0x063a>			" GHAIN
+_	<char-0x0640>			" TATWEEL
+f	<char-0x0641>			" FEH
+q	<char-0x0642>			" QAF
+k	<char-0x0643>			" KAF
+l	<char-0x0644>			" LAM
+m	<char-0x0645>			" MEEM
+n	<char-0x0646>			" NOON
+h	<char-0x0647>			" HEH
+w	<char-0x0648>			" WAW
+Y	<char-0x0649>			" ALEF MAKSURA
+y	<char-0x064a>			" YEH
+'	<char-0x0621>			" HAMZA
+|	<char-0x0622>			" ALEF WITH MADDA ABOVE
+>	<char-0x0623>			" ALEF WITH HAMZA ABOVE
+&	<char-0x0624>			" WAW WITH HAMZA ABOVE
+<	<char-0x0625>			" ALEF WITH HAMZA BELOW
+}	<char-0x0626>			" YEH WITH HAMZA ABOVE
+F	<char-0x064b>			" Tanween -- FATHATAN
+N	<char-0x064c>			" Tanween -- DAMMATAN
+K	<char-0x064d>			" Tanween -- KASRATAN
+a	<char-0x064e>			" Tanween -- FATHA
+u	<char-0x064f>			" Tanween -- DAMMA
+i	<char-0x0650>			" Tanween -- KASRA
+~	<char-0x0651>			" Tanween -- SHADDA
+o	<char-0x0652>			" Tanween -- SUKUN
+;	<char-0x061b>			" Arabic Semicolon
+,	<char-0x060c>			" Arabic Comma
+?	<char-0x061f>			" Arabic Question Mark
+{	<char-0x0671>			" ALEF WASLA
+P	<char-0x067E>			" PEH
+J	<char-0x0686>			" TCHEH
+V	<char-0x06A4>			" VEH
+G	<char-0x06AF>			" GAF
+0	<char-0x06F0>			" Arabic-Indic 0
+1	<char-0x06F1>			" Arabic-Indic 1
+2	<char-0x06F2>			" Arabic-Indic 2
+3	<char-0x06F3>			" Arabic-Indic 3
+4	<char-0x06F4>			" Arabic-Indic 4
+5	<char-0x06F5>			" Arabic-Indic 5
+6	<char-0x06F6>			" Arabic-Indic 6
+7	<char-0x06F7>			" Arabic-Indic 7
+8	<char-0x06F8>			" Arabic-Indic 8
+9	<char-0x06F9>			" Arabic-Indic 9