[Draft] Board report

[Sheng Wu <wu...@gmail.com>]

## Description:
The mission of Apache SkyWalking is the creation and maintenance of
software
related to application performance management and monitoring (APM)

## Issues:
No issue

## Membership Data:
Apache SkyWalking was founded 2019-04-17 (2 years ago)
There are currently 47 committers and 28 PMC members in this project.
The Committer-to-PMC ratio is roughly 3:2.

Community changes, past quarter:
- No new PMC members. Last addition was Juntao Zhang on 2021-02-24.
- Ruixian Wang was added as committer on 2021-06-23
- Tomasz Pytel was added as committer on 2021-05-29
- Hailin Wang was added as committer on 2021-05-07

## Project Activity:
Several releases
1. CLI-0.7.0 was released on 2021-06-18.
2. 8.6.0 was released on 2021-06-10.
3. nodejs-0.3.0 was released on 2021-05-27.
4. client-js-0.5.1 was released on 2021-05-21.
5. kong-0.1.1 was released on 2021-05-12.
6. nginx-lua-0.5.0 was released on 2021-04-25.
7. 8.5.0 was released on 2021-04-12.
8. SWCK-0.3.0 was released on 2021-04-06.

We host in person SkyWalkingDay meetup at Beijing. Over 100 attendees on
site, and 200+ ateendees watched online.

## Community Health:
The community is healthy.

We have clear drop of mail list traffic and number of PRs, due to
last round releases are all finished.

dev@skywalking.apache.org had a 40% decrease in traffic in the past
quarter (172 emails compared to 286)

652 commits in the past quarter (-15% change)
81 code contributors in the past quarter (-4% change)
402 PRs opened on GitHub, past quarter (-22% change)
409 PRs closed on GitHub, past quarter (-20% change)
295 issues opened on GitHub, past quarter (-6% change)
289 issues closed on GitHub, past quarter (-5% change)

PR and code commits are still over hundreds, and 81 contributors work
around the project.

Sheng Wu 吴晟
Twitter, wusheng1108