chore: hide AI Gateway key management UI/CLI/API (#26879)

Hides UI, CLI and API related to AI Gateway key management +
`/api/v2/ai-gateway/serve` endpoint.
API endpoints and CLI commands are still working they are just not
visible.

enterprise/cli/aigateway.go

@@ -14,8 +14,9 @@ import (
 
 func (r *RootCmd) aiGateway() *serpent.Command {
 	return &serpent.Command{
-		Use:   "ai-gateway",
-		Short: "Manage AI Gateway",
+		Use:    "ai-gateway",
+		Short:  "Manage AI Gateway",
+		Hidden: true,
 		Handler: func(inv *serpent.Invocation) error {
 			return inv.Command.HelpHandler(inv)
 		},

enterprise/cli/testdata/coder_--help.golden

@@ -16,7 +16,6 @@ USAGE:
 SUBCOMMANDS:
     agent-firewall         Network isolation tool for monitoring and restricting
                            HTTP/HTTPS requests
-    ai-gateway             Manage AI Gateway
     external-workspaces    Create or manage external workspaces
     features               List Enterprise features
     groups                 Manage groups

enterprise/cli/testdata/coder_ai-gateway_--help.golden

@@ -1,12 +0,0 @@
-coder v0.0.0-devel
-
-USAGE:
-  coder ai-gateway
-
-  Manage AI Gateway
-
-SUBCOMMANDS:
-    keys    Manage AI Gateway keys
-
-———
-Run `coder --help` for a list of global options.

enterprise/cli/testdata/coder_ai-gateway_keys_--help.golden

@@ -1,14 +0,0 @@
-coder v0.0.0-devel
-
-USAGE:
-  coder ai-gateway keys
-
-  Manage AI Gateway keys
-
-SUBCOMMANDS:
-    create    Create an AI Gateway key
-    delete    Delete an AI Gateway key
-    list      List AI Gateway keys
-
-———
-Run `coder --help` for a list of global options.

enterprise/cli/testdata/coder_ai-gateway_keys_create_--help.golden

@@ -1,9 +0,0 @@
-coder v0.0.0-devel
-
-USAGE:
-  coder ai-gateway keys create <name>
-
-  Create an AI Gateway key
-
-———
-Run `coder --help` for a list of global options.

enterprise/cli/testdata/coder_ai-gateway_keys_delete_--help.golden

@@ -1,15 +0,0 @@
-coder v0.0.0-devel
-
-USAGE:
-  coder ai-gateway keys delete [flags] <name|id>
-
-  Delete an AI Gateway key
-
-  Aliases: rm
-
-OPTIONS:
-  -y, --yes bool
-          Bypass confirmation prompts.
-
-———
-Run `coder --help` for a list of global options.

enterprise/cli/testdata/coder_ai-gateway_keys_list_--help.golden

@@ -1,18 +0,0 @@
-coder v0.0.0-devel
-
-USAGE:
-  coder ai-gateway keys list [flags]
-
-  List AI Gateway keys
-
-  Aliases: ls
-
-OPTIONS:
-  -c, --column [id|name|key prefix|created at|last heartbeat at] (default: id,name,key prefix,last heartbeat at,created at)
-          Columns to display in table output.
-
-  -o, --output table|json (default: table)
-          Output format.
-
-———
-Run `coder --help` for a list of global options.