[ADD] base: add locale for en_IN
[ADD] base: add locale for en_IN

English (India) needs its own locale definition so that it can be
selected at the time of database creation.

For example, the amounts in India are displayed/printed as
99,99,99,999.99 (crore, lakh/lac, thousand, etc.) instead of
999,999,999,999.99 (billion, million, thousand, etc.)

closes odoo/odoo#40393

Signed-off-by: Martin Trigaux (mat) <cc7c5be316e48d137cbb549833b85d91034d799d@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo