chore: Convert existing .bat files to shell scripts

The environment includes java, maven, IntelliJ and a postgres server.

devenv.nix

@@ -7,7 +7,11 @@
 }:
 
 {
-  imports = [ ];
+  imports = [
+    ./nix/kafka.nix
+  ];
+  # https://devenv.sh/basics/
+  # env.GREET = "devenv";
 
   # https://devenv.sh/packages/
   packages = [
@@ -49,14 +53,45 @@
         "distributed-ticketing"
         "distributed-test"
       ]);
+
+    # initialDatabases =
+    #   map
+    #     (n: rec {
+    #       name = n;
+    #       user = "flexinale";
+    #       pass = "flexinale";
+    #       schema = pkgs.writeText "${name}.sql" ''
+    #         CREATE DATABASE "${name}";
+    #         GRANT ALL PRIVILEGES ON DATABASE "${name}" TO "${user}";
+    #       '';
+    #     })
+    #     [
+    #       "monolith"
+    #       "modulith-1"
+    #       "modulith-2"
+    #       "distributed-backoffice"
+    #       "distributed-besucherportal"
+    #       "distributed-ticketing"
+    #       "distributed-test"
+    #     ];
   };
 
   # https://devenv.sh/scripts/
-  scripts.monolith-load.exec = ''
-    cd ${config.env.DEVENV_ROOT}/flex-training-flexinale
-    mvn test -Dtest=testdata.TestDataLoader -pl flexinale-monolith -am
+  scripts.hello.exec = ''
+    echo hello from $GREET
   '';
 
+  # enterShell = ''
+  #   hello
+  #   git --version
+  # '';
+
+  # https://devenv.sh/tasks/
+  # tasks = {
+  #   "myproj:setup".exec = "mytool build";
+  #   "devenv:enterShell".after = [ "myproj:setup" ];
+  # };
+
   # https://devenv.sh/tests/
   enterTest = ''
     echo "Running tests"