build-sys: meson: Rearrange shell completion between daemon and client

Rename bash completion file to pactl and install it with client build.
Completions specific to daemon are now just symlinks, create target directory
first to install them.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/659>

shell-completion/bash/meson.build

@@ -3,27 +3,33 @@ if bashcompletiondir != 'no'
 
   if get_option('daemon')
     aliases += [
+      'pulseaudio',
       'pacmd',
       'pasuspender',
     ]
+
+    # Create target directory for symlinks
+    if meson.version().version_compare('>= 0.60.0')
+      install_emptydir(bashcompletiondir)
+    else
+      meson.add_install_script('sh', '-c', 'mkdir -p $DESTDIR@0@'.format(bashcompletiondir))
+    endif
   endif
 
   if get_option('client')
-  aliases += [
-    'pacat',
-    'pactl',
-    'padsp',
-    'paplay',
-    'parec',
-    'parecord',
-  ]
+    aliases += [
+      'pacat',
+      'padsp',
+      'paplay',
+      'parec',
+      'parecord',
+    ]
+    install_data('pactl', install_dir : bashcompletiondir)
   endif
 
-  install_data('pulseaudio', install_dir : bashcompletiondir)
-
   foreach alias : aliases
     dst = join_paths(bashcompletiondir, alias)
-    cmd = 'ln -fs @0@ $DESTDIR@1@'.format('pulseaudio', dst)
+    cmd = 'ln -fs @0@ $DESTDIR@1@'.format('pactl', dst)
     meson.add_install_script('sh', '-c', cmd)
   endforeach
 endif