fix: improve provisioner key cli usability (#14834)

What this changes:
- Unhides the `--key` flag on provisioner start
- Deprecates and hides `provisionerd` command group in favor of
`provisioner(s)`
- Removes org id from `coder provisioner keys list`

docs/reference/cli/provisioner_keys_delete.md

@@ -0,0 +1,34 @@
+<!-- DO NOT EDIT | GENERATED CONTENT -->
+
+# provisioner keys delete
+
+Delete a provisioner key
+
+Aliases:
+
+- rm
+
+## Usage
+
+```console
+coder provisioner keys delete [flags] <name>
+```
+
+## Options
+
+### -y, --yes
+
+|      |                   |
+| ---- | ----------------- |
+| Type | <code>bool</code> |
+
+Bypass prompts.
+
+### -O, --org
+
+|             |                                  |
+| ----------- | -------------------------------- |
+| Type        | <code>string</code>              |
+| Environment | <code>$CODER_ORGANIZATION</code> |
+
+Select which organization (uuid or name) to use.