Update MAINTAINERS (#636)

* Update MAINTAINERS

Signed-off-by: Trishank Karthik Kuppusamy <[email protected]>

* move to MD

Signed-off-by: Trishank Karthik Kuppusamy <[email protected]>

* Update MAINTAINERS.md

Signed-off-by: Trishank Karthik Kuppusamy <[email protected]>

---------

Signed-off-by: Trishank Karthik Kuppusamy <[email protected]>

Author: trishankatdatadog

MAINTAINERS

@@ -0,0 +1,23 @@
+# Maintainers should review changes promptly.
+# Github will auto-assign the below maintainers to a pull request.
+
+## Current
+
+The [@theupdateframework/go-tuf-maintainers](https://github.com/orgs/theupdateframework/teams/go-tuf-maintainers) team is:
+
+| Maintainer                 | GitHub ID                                                  | Affiliation                                |
+| -------------------------- | ---------------------------------------------------------- | ------------------------------------------ |
+| Fredrik Skogman            | [@kommendorkapten](https://github.com/kommendorkapten)     | [@GitHub](https://github.com/github)       |
+| Joshua Lock                | [@joshuagl](https://github.com/joshuagl)                   | [@Verizon](https://github.com/verizon)     |
+| Marina Moore               | [@mnm678](https://github.com/mnm678)                       | NYU                                        |
+| Marvin Drees               | [@MDr164](https://github.com/MDr164)                       | [@9elements](https://github.com/9elements) |
+| Radoslav Dimitrov          | [@rdimitrov](https://github.com/rdimitrov)                 | [@Stacklok](https://github.com/stacklok)   |
+| Trishank Karthik Kuppusamy | [@trishankatdatadog](https://github.com/trishankatdatadog) | [@DataDog](https://github.com/DataDog)     |
+
+## Emeritus
+
+We are deeply indebted to our emeritus maintainers below:
+
+| Maintainer         | GitHub ID                                                 | Affiliation |
+| ------------------ | --------------------------------------------------------- | ----------- |
+| Zack Newman        | [@znewman01](https://github.com/znewman01)                | N/A         |