Add SteamWar CLI module

- add Clikt-based `sw` entrypoint and subcommands
- include database, user, dev, and profiler commands
- wire CLI build and CI install/release steps

CLI/src/commands/SteamWar.kt

@@ -0,0 +1,10 @@
+package de.steamwar.commands
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.github.ajalt.mordant.rendering.TextStyles
+
+class SteamWar: CliktCommand(name = "sw") {
+    override fun run() {
+        echo(TextStyles.bold("SteamWar-CLI"))
+    }
+}