Document committee membership

[ahdigital]

Looks like there were some articles about this hosted on docs.bitshares.org which no longer exist.

Topics to include:

• What the committee does
• How they get votes and why
• How to become a member
• etc.

[cedar-book]

The below links are equivalent pages.

• https://how.bitshares.works/en/master/user_guide/accounts/voting.html
• https://how.bitshares.works/en/master/bts_holders/community_members.html
• https://how.bitshares.works/en/master/bts_holders/bts_governance.html
• https://how.bitshares.works/en/master/bts_holders/things_to_know.html
• https://dev.bitshares.works/en/master/bts_guide/tutorials/index.html?#worker
• https://dev.bitshares.works/en/master/bts_guide/tutorials/index.html?#committee-guide