kapowbang: rename from kapow

kapow is an established name of an older project, being packaged in #78407.
Repology and ArchLinux call the Go project kapowbang because its name is "Kapow!":
https://github.com/BBVA/kapow
https://repology.org/projects/?search=kapow
https://aur.archlinux.org/packages/?K=kapow

pkgs/servers/kapowbang/default.nix

@@ -1,14 +1,14 @@
 { stdenv, buildGoModule, fetchFromGitHub }:
 
 buildGoModule rec {
-  pname = "kapow";
+  pname = "kapowbang";
   version = "0.5.4";
 
   subPackages = [ "." ];
 
   src = fetchFromGitHub {
     owner = "BBVA";
-    repo = pname;
+    repo = "kapow";
     rev = "v${version}";
     sha256 = "09qr631vzlgibz6q64f35lqzz9h1g3gxqfbapkrci5i0n3h04yr4";
   };

pkgs/top-level/all-packages.nix

@@ -16550,7 +16550,7 @@ in
 
   jitsi-videobridge = callPackage ../servers/jitsi-videobridge { };
 
-  kapow = callPackage ../servers/kapow { };
+  kapowbang = callPackage ../servers/kapowbang { };
 
   keycloak = callPackage ../servers/keycloak { };