luci-base: move and rename ucitrack samba.json

Move the json file to where it belongs.

Signed-off-by: Florian Eckert <redacted>

diff --git a/modules/luci-base/root/usr/share/ucitrack/samba.json b/applications/luci-app-samba4/root/usr/share/ucitrack/luci-app-samba4.json
similarity index 100%
rename from modules/luci-base/root/usr/share/ucitrack/samba.json
rename to applications/luci-app-samba4/root/usr/share/ucitrack/luci-app-samba4.json