meson: convert -Dterminfo from a boolean to a feature option

Patch from Jan Beich

.builds/freebsd-x64.yml

@@ -34,11 +34,11 @@ tasks:
       ln -s ../../fcft foot/subprojects/fcft
   - debug: |
       mkdir -p bld/debug
-      meson --buildtype=debug -Dterminfo=false -Dfcft:text-shaping=enabled  -Dfcft:test-text-shaping=true foot bld/debug
+      meson --buildtype=debug -Dterminfo=disabled -Dfcft:text-shaping=enabled  -Dfcft:test-text-shaping=true foot bld/debug
       ninja -C bld/debug -k0
       meson test -C bld/debug --print-errorlogs
   - release: |
       mkdir -p bld/release
-      meson --buildtype=minsize -Dterminfo=false -Dfcft:text-shaping=enabled  -Dfcft:test-text-shaping=true foot bld/release
+      meson --buildtype=minsize -Dterminfo=disabled -Dfcft:text-shaping=enabled  -Dfcft:test-text-shaping=true foot bld/release
       ninja -C bld/release -k0
       meson test -C bld/release --print-errorlogs

doc/foot.ini.5.scd

@@ -112,7 +112,7 @@ in this order:
 
 *term*
 	Value to set the environment variable *TERM* to. Default: _foot_
-	or _xterm-256color_ if built with _-Dterminfo=false_
+	or _xterm-256color_ if built with _-Dterminfo=disabled_
 
 *title*
 	Initial window title. Default: _foot_.

foot.ini

@@ -10,7 +10,7 @@
 # initial-window-mode=windowed
 # pad=2x2
 # shell=$SHELL (if set, otherwise user's default shell from /etc/passwd)
-# term=foot (or xterm-256color if built with -Dterminfo=false)
+# term=foot (or xterm-256color if built with -Dterminfo=disabled)
 # login-shell=no
 # workers=<number of logical CPUs>
 # bold-text-in-bright=no

meson_options.txt

@@ -1,2 +1,2 @@
 option('ime', type: 'boolean', value: true, description: 'IME (Input Method Editor) support')
-option('terminfo', type: 'boolean', value: true, description: 'Install terminfo')
+option('terminfo', type: 'feature', description: 'Install terminfo')