[new]Add opentelemetry-instrumentation-libmc

[LeoQuote]

Description

libmc is a memcached client similar to https://github.com/pinterest/pymemcache/tree/master

This pr support libmc instrumentation

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Not yet, just tested with tutorial flask app.

Does This PR Require a Core Repo Change?

• [ ] Yes. - Link to PR:
• [x] No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• [ ] Followed the style guidelines of this project
• [ ] Changelogs have been updated
• [ ] Unit tests have been added
• [ ] Documentation has been updated

[linux-foundation-easycla[bot]]

• :x: - login: @LeoQuote / name: Leo Q . The commit (b04337b81ff2734cfbab06f63e4a2df5687de7f4, 38f9df07861b602d89019d0b2bc80e43e0f894f5) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.