[BIP-644] Enable trenSTETH Gauge [Ethereum]

[Zen-Maxi]

Enable trenSTETH Gauge on Mainnet, LRT 5Pool from Mellow Finance.

Rate providers reviewed here: balancer/code-review#93

Proposal: https://forum.balancer.fi/t/bip-xxx-enable-gauge-for-amphreth-rsteth-re7lrt-steaklrt-wsteth-ethereum/5837

[github-actions]

BIP validation results for file BIPs/2024-W27/[BIP-644] Enable amphrETH/rstETH/Re7LRT/steakLRT/[BIP-644] Enable trenSTETH Gauge [Ethereum].json:
Commit: 59fd5c03fb09cb655a6ad3f3535f5eaf24eff1fe

Validator	Result
validate_contains_msig	OK
validate_msig_in_address_book	OK
validate_chain_specified	OK
validate_file_has_bip	OK
validate_path_has_weekly_dir	OK

[github-actions]

FILENAME: BIPs/2024-W27/[BIP-644] Enable amphrETH/rstETH/Re7LRT/steakLRT/[BIP-644] Enable trenSTETH Gauge [Ethereum].json
MULTISIG: multisigs/lm (mainnet:0xc38c5f97B34E175FFd35407fc91a937300E33860)
COMMIT: 59fd5c03fb09cb655a6ad3f3535f5eaf24eff1fe
CHAIN(S): mainnet
TENDERLY: SUCCESS

+-----------------------+---------------------------------------------------------------------+-----------------+--------------------------------------------+-------------------------------------------------------+--------------------------------------------+----------------+---------+----------+
| function              | pool_id_and_address                                                 | symbol_and_info | gauge_address_and_info                     | tokens                                                | rate_providers                             | review_summary |   bip   | tx_index |
+-----------------------+---------------------------------------------------------------------+-----------------+--------------------------------------------+-------------------------------------------------------+--------------------------------------------+----------------+---------+----------+
| GaugeAdderV4/addGauge | 0x4216d5900a6109bba48418b5e2ab6cc4e61cf4770000000000000000000006a1  | trenSTETH       | 0x03ac2920378A51d6CA78813b1d7578Dab08d3760 | 0x4216d5900a6109bba48418b5e2AB6cc4e61Cf477: trenSTETH | 0x0000000000000000000000000000000000000000 |       --       | BIP-644 |    0     |
|                       | pool_address: 0x4216d5900a6109bba48418b5e2AB6cc4e61Cf477            | fee: 0.04       | Style: mainnet                             | 0x5fD13359Ba15A84B76f7F87568309040176167cd: amphrETH  | 0x3A2228C7B3Bc3A32AEa9338d0A890A5EbD7bc977 | !!NO REVIEW!!  |         |          |
|                       |                                                                     | a-factor: 200   | cap: 100.0%                                | 0x7a4EffD87C2f3C55CA251080b1343b605f327E3a: rstETH    | 0x6984F8E8ce474B69A2F32bE7dEc4d003d644B4B7 | !!NO REVIEW!!  |         |          |
|                       |                                                                     |                 |                                            | 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0: wstETH    | 0x72D07D7DcA67b8A406aD1Ec34ce969c90bFEE768 |      safe      |         |          |
|                       |                                                                     |                 |                                            | 0x84631c0d0081FDe56DeB72F6DE77abBbF6A9f93a: Re7LRT    | 0x9D09c1E832102A23215e27E85B37b139aEe95Ff4 | !!NO REVIEW!!  |         |          |
|                       |                                                                     |                 |                                            | 0xBEEF69Ac7870777598A04B2bd4771c71212E6aBc: steakLRT  | 0x20EDB9299Ae83D9f22bE16279a4A2B422F34d020 | !!NO REVIEW!!  |         |          |
+-----------------------+---------------------------------------------------------------------+-----------------+--------------------------------------------+-------------------------------------------------------+--------------------------------------------+----------------+---------+----------+

[gosuto-inzasheru]

lgtm except for rate providers; still need peer review