[ADD] CLA Signature Aktiv Software

closes odoo/odoo#78914

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

doc/cla/corporate/aktivsoftware.md

+India 2021-10-14
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+Aktiv Software Pvt. Ltd. agrees to the terms of the Odoo Corporate Contributor License Agreement v1.0.
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+I declare that I am authorized and able to make this agreement and sign this declaration.
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+Signed,
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+Aktiv Software odoo@aktivsoftware.com https://github.com/odooaktiv/odoo
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+List of contributors:
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+Aktiv Software odoo@aktivsoftware.com https://github.com/odooaktiv/odoo