patch 9.2.0562: filetype: SGF files are not recognized

Problem:  filetype: SGF files are not recognized
Solution: Detect *.sgf as sgf filetype
          (Borys Lykah)

Reference:
https://www.red-bean.com/sgf/index.html

closes: #20349

Signed-off-by: Borys Lykah <lykahb@fastmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/autoload/dist/ft.vim

@@ -2735,6 +2735,8 @@ const ft_from_ext = {
   "mill": "scala",
   # SBT - Scala Build Tool
   "sbt": "sbt",
+  # SGF, Smart Game Format
+  "sgf": "sgf",
   # Slang Shading Language
   "slang": "shaderslang",
   # Slint

src/testdir/test_filetype.vim

@@ -741,6 +741,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     services: ['/etc/services', 'any/etc/services'],
     setserial: ['/etc/serial.conf', 'any/etc/serial.conf'],
     sexplib: ['file.sexp'],
+    sgf: ['file.sgf'],
     sh: ['.bashrc', '.bash_profile', '.bash-profile', '.bash_logout', '.bash-logout', '.bash_aliases', '.bash-aliases', '.bash_history', '.bash-history',
          '/tmp/bash-fc-3Ozjlw', '/tmp/bash-fc.3Ozjlw', 'PKGBUILD', 'file.bash', '/usr/share/doc/bash-completion/filter.sh',
          '/etc/udev/cdsymlinks.conf', 'any/etc/udev/cdsymlinks.conf', 'file.bats', '.ash_history', 'any/etc/neofetch/config.conf', '.xprofile',

src/version.c

@@ -729,6 +729,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    562,
 /**/
     561,
 /**/