Add Android SIG (#1923)

* Add Android SIG

* Update link to GC-owned doc

---------

Co-authored-by: Morgan McLean <[email protected]>

Author: breedx-splk

README.md

@@ -144,6 +144,7 @@ SIG-specific GitHub discussions.
 | Name                                  | Meeting Time                                                                                               | Meeting Notes                                                                                                             | Slack Channel                                                                                                                                                |
 |---------------------------------------|------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | Maintainers Meeting                   | Every Monday at 09:00PT                                                                                    | [Google Doc](https://docs.google.com/document/d/1_X2CTiDXmxk2JozBNwQ2uP8FfV1rxx9ISE5puHu0yIk/edit)                             | [#otel-maintainers](https://cloud-native.slack.com/archives/C01NJ7V1KRC)                                                                                     |
+| Android: SDK + Automatic Instrumentation | Every Tuesday at 08:00PT                                                                                | [Google Doc](https://docs.google.com/document/d/1W72oElAJuYx3efM9wkH5l1iksdfwmTSkVl-H7KHTLnY/)                             | [#otel-android](https://cloud-native.slack.com/archives/C05J0T9K27Q)                                                                                    |
 | Collector                             | Every Wednesday at 09:00 PT plus monthly on first Wednesday at 00:00 PT and on third Wednesday at 16:00 PT | [Google Doc](https://docs.google.com/document/d/1r2JC5MB7GupCE7N32EwGEXs9V_YIsPgoFiLP4VWVMkE/edit?usp=sharing)            | [#otel-collector](https://cloud-native.slack.com/archives/C01N6P7KR6W)                                                                                       |
 | C/C++: SDK                            | Every week alternating between Monday at 13:00 PT and Wednesday at 9:00 PT                                 | [Google Doc](https://docs.google.com/document/d/1i1E4-_y4uJ083lCutKGDhkpi3n4_e774SBLi9hPLocw/edit?usp=sharing)            | [#otel-cpp](https://cloud-native.slack.com/archives/C01N3AT62SJ)                                                                                             |
 | .NET: Automatic Instrumentation       | Every Wednesday at 9:00 PT                                                                                 | [Google Doc](https://docs.google.com/document/d/1XedN2D8_PH4YLej-maT8sp4RKogfuhFpccRi3QpUcoI/edit?usp=sharing)            | [#otel-dotnet-auto-instr](https://cloud-native.slack.com/archives/C01NR1YLSE7)                                                                               |