[WIP]PIP-?: Revised Partitioned topic

## Motivation

Very early on, Apache Pulsar introduced partition topic, But It does not have an associated PIP that defines its definition and behaviour. this involves some problems.

E.g.:
- user can use `-partitioned-` keyword to create an independent topic, which will introduce another complexity for the partitioned topic.
- user can still create a persistent topic `partition` even if the partition index is greater than the partitioned topic metadata defined.
- ...

## Goal

Provides the clarified partitioned topic definition and fixes the inappropriate part.

## Definition

### What is the partitioned topic?

Before we introduce the partitioned topic, it's better to know the topic name format first. Let's start with the non-partitioned topic(normal topic).

- **Topic Domain:**
- **Tenant:**
- **Namespace:**
- **Local Name:**

Next, it's the partitioned topic naming format.

- **`-partition-` keyword:**
- **Partition index:**

If we create a topic with four partitions, that will be looks like this:

### What does a partitioned topic mean for the broker and client?

### How to create the partitioned topic.

#### Auto-creation

#### Management API

### How to scale partitioned numbers.

### How to delete partitioned topic

### Inactive policy

### Management API

### Replication of partitioned topic

### Dead letter queue for the partitioned topic.

## Inappropriate Implementation