ipk-source: Add luci-app-tailscale; rename directories

- Added luci-app-tailcale to ipk-source from: https://github.com/asvow/luci-app-tailscale/releases/tag/v1.2.3

- Renamed ipk-source directories to have no version number, only arch where needed.

ipk-source/tailscale_aarch64_cortex-a53/CONTROL/control

@@ -0,0 +1,13 @@
+Package: tailscale
+Version: 1.78.1-1
+Depends: libc, tailscaled
+Source: feeds/packages/net/tailscale
+SourceName: tailscale
+License: BSD-3-Clause
+LicenseFiles: LICENSE
+Section: net
+Maintainer: Jan Pavlinec <jan.pavlinec1@gmail.com>
+Architecture: aarch64_cortex-a53
+Description:  It creates a secure network between your servers, computers,
+ and cloud instances. Even when separated by firewalls or subnets. Updated
+ by iamromulan to 1.76.1