Let users run our demo without go environment

[seeflood]

What would you like to be added:

• Start Layotto with docker
• develop SDK in different languages.
• run quickstart with java sdk
• run quickstart with js sdk

Why is this needed:
Currently users have to run our demo with go environment preinstalled

[seeflood]

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[seeflood]

The problems still exist:

1. Currently users still need to setup go,docker and back-end storages (e.g. redis or etcd) environment when running demos or developing sdk. For example, see https://mosn.io/layotto/#/zh/start/configuration/start-apollo

2. Moreover , the docker image is too hard for chinese users to download:
   

3. Last week I submit a post in leetcode to introduce our community tasks,see https://leetcode-cn.com/circle/discuss/znxN9P/
   The traffic is high but the conversion rate is not that good.
   
   We need to make it easier to run and contribute to layotto !

What we need:

• Let users run our demo without go and docker environment
• Let sdk developers develop without go environment,preferably no need to install docker

How to achieve these goals?

• Develop in-memory components for all the grpc api. For example, in-memory state store component which support all the CRUD features
• state . See feat: in-memory state store components #327
• pubsub . Assigned to @zach030
• lock
• sequencer
• configuration API

These components are also useful when running test cases.

• Release layotto binary filles with in-memory components preinstalled. Users and sdk developers can download the corresponding binary file and run it without go and docker.

• modify all the quickstart documents

  • file
  • state
  • pubsub
  • lock
  • sequencer
  • configuration API

• Write a tutorial on "how to become Layotto sdk contributor"

[zach030]

I want to implement inmemory-pubsub refer to Dapr pubsub inmemory

[seeflood]

@zach030 OK, in-memory pubsub component will be assigned to you.
You can take #327 as an example
Thanks for your contribution!

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity in the last 30 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue or help wanted) or other activity occurs. Thank you for your contributions.