Not changing the actual default, just what is printed in the help
output.

Closes #833

---------

Co-authored-by: Spencer Judge <[email protected]>

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## What was changed
+ Added a new `report-config` field in the describe command to retrieve
updated task queue configs if exists.
+ Implement display logic for config table along with truncation of
large update reasons or update identities.
**Note : These changes are only a part of the legacy mode of the
describeTaskQueueApi.**

```
./temporal task-queue describe \                                                               
 --task-queue=test-display-queue \
 --task-queue-type-legacy=activity \
 -n=default \
 --report-config \
 --legacy-mode
```

Sample Response
```
./temporal task-queue describe \
 --task-queue=hello-world \
 --task-queue-type-legacy=activity \
 -n=default \
 --report-config \
 --legacy-mode
Pollers:
  Identity  LastAccessTime  RatePerSecond

Task Queue Configuration:
Note: Long content may be truncated. Use --output json for full details.
              Setting                     Value              Reason        UpdatedBy       UpdatedTime    
  Fairness Key Rate Limit Default  100 requests/second  Fairness key test  api-tester  2025-08-12 04:31:46
```

---

+ Added separate config Subcommand for getting/setting configs.
```
./temporal task-queue config --help  
Manage Task Queue configuration:

temporal task-queue config [command] [options]

Available commands:
- get: Retrieve the current configuration for a task queue
- set: Update the configuration for a task queue

Usage:
  temporal task-queue config [command]

Available Commands:
  get         Get Task Queue configuration
  set         Set Task Queue configuration
```
---

+ Get Subcommand
```
./temporal task-queue config get --help
Retrieve the current configuration for a Task Queue:

temporal task-queue config get \
    --task-queue YourTaskQueue \
    --task-queue-type activity

This command returns the current configuration including:
- Queue rate limit: The overall rate limit of the task queue.
  This setting overrides the worker rate limit if set.
  Unless modified, this is the system-defined rate limit.
- Fairness key rate limit defaults: Default rate limits for fairness keys.
  If set, each individual fairness key will be limited to this rate,
  scaled by the weight of the fairness key.

Usage:
  temporal task-queue config get [flags]
```
Sample Response
```
./temporal task-queue config get \
  --task-queue=hello-world \
  --task-queue-type=activity \
  --namespace=default
Note: Long content may be truncated. Use --output json for full details.
              Setting                     Value              Reason        UpdatedBy       UpdatedTime    
  Fairness Key Rate Limit Default  100 requests/second  Fairness key test  api-tester  2025-08-12 04:31:46
```

---

+ Set Subcommand
```
./temporal task-queue config set --help
Update a Task Queue's overall rate limit and the default rate limit for all fairness keys:

temporal task-queue config set \
    --task-queue YourTaskQueue \
    --task-queue-type activity \
    --namespace YourNamespace \
    --queue-rps-limit <requests_per_second:float> \
    --queue-rps-limit-reason <reason_string> \
    --fairness-key-rps-limit-default <requests_per_second:float> \
    --fairness-key-rps-limit-reason <reason_string>

This command supports updating:
- Queue rate limits: Controls the overall rate limit of the task queue.
  This setting overrides the worker rate limit if set.
  Unless modified, this is the system-defined rate limit.
- Fairness key rate limit defaults: Sets default rate limits for fairness keys.
  If set, each individual fairness key will be limited to this rate,
  scaled by the weight of the fairness key.

To unset a rate limit, pass in 'default', for example: --queue-rps-limit default

Usage:
  temporal task-queue config set [flags]

Flags:
      --fairness-key-rps-limit-default float|default   Fairness key rate limit default in requests per second. Accepts a float; or 'default' to unset.
      --fairness-key-rps-limit-reason string           Reason for fairness key rate limit update.
  -h, --help                                           help for set
      --queue-rps-limit float|default                  Queue rate limit in requests per second. Accepts a float; or 'default' to unset.
      --queue-rps-limit-reason string                  Reason for queue rate limit update.
  -t, --task-queue string                              Task Queue name. Required.
      --task-queue-type string                         Task Queue type. Accepted values: workflow, activity, nexus. Accepted values: workflow, activity, nexus. Required.
```
   

Sample response : 
```
./temporal task-queue config set \
  --task-queue=hello-world \
  --task-queue-type=activity \
  --fairness-key-rps-limit-default=100 \
  --fairness-key-rps-limit-reason="Fairness key test" \
  --identity="api-tester" \
  --namespace=default
Successfully updated task queue configuration
  Config  {"fairnessKeysRateLimitDefault":{"rateLimit":{"requestsPerSecond":100},"metadata":{"reason":"Fairness key test","updateIdentity":"api-tester","updateTime":"2025-08-12T04:31:46.640Z"}}}
```

## Why?
+ Cli support for `UpdateTaskQueueConfig` api - new api that allows
updates of rate limits against task queues.

## Checklist

1. How was this tested:
+ Added tests.

2. Any docs updates needed?
Pending.

---------

Co-authored-by: Stephan Behnke <[email protected]>
Co-authored-by: Stephan Behnke <[email protected]>