Rename package from pinecone-client to pinecone (#383)

## Problem

We want to rename this package from `pinecone-client` to `pinecone`.

## Solution

- Update `pyproject.toml` to refer to the new name `pinecone`
- Find and replace references to old package name in README and
docstrings
- Remove nightly publish job that would need to be updated but has been
broken for a long time for other reasons

After this rename, we will need to setup a separate project to wrap this
and continue publishing it under the old `pinecone-client` name for
people who may not know about the rename, very similar to how old
releases have been republished as `pinecone` using [this wrapper
project](https://github.com/pinecone-io/pypi-backfill-pinecone).

## Type of Change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [x] This change requires a documentation update
- [ ] Infrastructure change (CI configs, etc)
- [ ] Non-code change (docs, etc)
- [x] None of the above: We plan to publish a wrapper package under the
name `pinecone-client`. So this shouldn't be a breaking change for end
users consuming updates via the old name.

## Test Plan

Describe specific steps for validating this change.

Author: jhamon

.github/workflows/alpha-release.yaml

@@ -1,4 +1,4 @@
-name: 'PyPI Release: Pre-Release (pinecone-client)'
+name: 'PyPI Release: Pre-Release (pinecone)'
 
 on:
   workflow_dispatch:

.github/workflows/nightly-release.yaml

@@ -1,4 +1,4 @@
-name: 'PyPI Release: Production (pinecone-client)'
+name: 'PyPI Release: Production (pinecone)'
 
 on:
   workflow_dispatch:

.github/workflows/release.yaml

@@ -33,40 +33,40 @@ The Pinecone Python SDK is compatible with Python 3.8 and greater.
 
 ## Installation
 
-There are two flavors of the Pinecone Python SDK. The default flavor installed from PyPI as `pinecone-client` has a minimal set of dependencies and interacts with Pinecone via HTTP requests.
+There are two flavors of the Pinecone Python SDK. The default flavor installed from PyPI as `pinecone` has a minimal set of dependencies and interacts with Pinecone via HTTP requests.
 
 If you are aiming to maximimize performance, you can install additional gRPC dependencies to access an alternate SDK implementation that relies on gRPC for data operations. See the guide on [tuning performance](https://docs.pinecone.io/docs/performance-tuning).
 
 ### Installing with pip
 
 ```shell
 # Install the latest version
-pip3 install pinecone-client
+pip3 install pinecone
 
 # Install the latest version, with extra grpc dependencies
-pip3 install "pinecone-client[grpc]"
+pip3 install "pinecone[grpc]"
 
 # Install a specific version
-pip3 install pinecone-client==5.0.0
+pip3 install pinecone==5.0.0
 
 # Install a specific version, with grpc extras
-pip3 install "pinecone-client[grpc]"==5.0.0
+pip3 install "pinecone[grpc]"==5.0.0
 ```
 
 ### Installing with poetry
 
 ```shell
 # Install the latest version
-poetry add pinecone-client
+poetry add pinecone
 
 # Install the latest version, with grpc extras
-poetry add pinecone-client --extras grpc
+poetry add pinecone --extras grpc
 
 # Install a specific version
-poetry add pinecone-client==5.0.0
+poetry add pinecone==5.0.0
 
 # Install a specific version, with grpc extras
-poetry add pinecone-client==5.0.0 --extras grpc
+poetry add pinecone==5.0.0 --extras grpc
 ```
 
 ## Usage

README.md

@@ -13,20 +13,20 @@
 
 ```bash
 # Install the latest version
-pip3 install pinecone-client[grpc]
+pip3 install pinecone[grpc]
 
 # Install a specific version
-pip3 install "pinecone-client[grpc]"==3.0.0
+pip3 install "pinecone[grpc]"==3.0.0
 ```
 
 #### Installing with poetry
 
 ```bash
 # Install the latest version
-poetry add pinecone-client --extras grpc
+poetry add pinecone --extras grpc
 
 # Install a specific version
-poetry add pinecone-client==3.0.0 --extras grpc
+poetry add pinecone==3.0.0 --extras grpc
 ```
 
 ### Using the gRPC client

pinecone/grpc/__init__.py

@@ -19,7 +19,7 @@ class PineconeGRPC(Pinecone):
     pip3 install pinecone[grpc]
 
     # Install a specific version
-    pip3 install "pinecone-client[grpc]"==3.0.0
+    pip3 install "pinecone[grpc]"==3.0.0
     ```
 
     #### Installing with poetry
@@ -29,7 +29,7 @@ class PineconeGRPC(Pinecone):
     poetry add pinecone --extras grpc
 
     # Install a specific version
-    poetry add pinecone-client==3.0.0 --extras grpc
+    poetry add pinecone==3.0.0 --extras grpc
     ```
 
     ### Using the gRPC client

pinecone/grpc/pinecone.py

@@ -15,7 +15,7 @@ exclude = '''
 '''
 
 [tool.poetry]
-name = "pinecone-client"
+name = "pinecone"
 version = "5.0.1"
 packages = [
     { include="pinecone", from="." },