Add MAINTAINERS.md file

Signed-off-by: Juan Estrella <juan.estrella@finos.org>

Author: TheJuanAndOnly99

MAINTAINERS.md

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+# Maintainers
+
+This file lists the maintainers of this repository.
+
+## Current maintainers
+
+| GitHub Username | Name | Organization | Email |
+|----------------|------|--------------|-------|
+| @HarishMalavade | *please add name* | Fidelity Investment | *please add email* |
+| @SureshMuthukaruppasamy | *please add name* | *please add organization* | *please add email* |
+| @andy9876 | *please add name* | *please add organization* | andrew.bonham@verizon.net |
+| @aurelian-valeriu-apostol-db | *please add name* | *please add organization* | *please add email* |
+| @aurelianapostol | Aurelian | *please add organization* | *please add email* |
+| @eljaime | Jaime Mantilla | *please add organization* | *please add email* |
+| @gaborherr-db | *please add name* | *please add organization* | *please add email* |
+| @gliptak | Gábor Lipták | *please add organization* | *please add email* |
+| @kriswest | Kris West | NatWest Group | *please add email* |
+| @pieter-schutte | *please add name* | *please add organization* | *please add email* |
+| @prajwolbhandari1 | prajwol bhandari | *please add organization* | *please add email* |
+
+For information about maintainer responsibilities and resources, see the [FINOS Maintainers Cheatsheet](https://community.finos.org/docs/finos-maintainers-cheatsheet).
+
+## Updating this file
+
+All changes to the maintainer list are managed openly:
+
+- **Submit a Pull Request** to this file for any addition, removal, or update.
+- **If your project's governance requires a vote**, document or link to the vote outcome in the PR description or comments.
+- This process creates a public audit trail of project leadership over time.
+
+Please email **help@finos.org** whenever this file is updated with a change to maintainership.