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[xcvrd] Enhance Media Settings (sonic-net#177)
#### Description 1. Currently in sonic, for 400G pre-emphasis settings is not programmed via common methodology. We use Vendor Name + PN to program which would consume memory and never ending process as we need to add Vendor name + PN for every optic. 2. For 100G/40G optics, specification compliance is not displayed. Only for DAC, the specification compliance was displayed. #### Motivation and Context 1. With this PR, we can program the pre-emphasis settings for both DAC,AOC and optics. QSFP_DD parser doesn't have specification compliance which was need to program pre-emphasis settings. The platform API code can be changed to return the type_of_media_interface for 400G media specification compliance, so that the type of media can be determined. https://github.com/Azure/sonic-platform-common/blob/a95834b65a9f3b17ab1ce4e1ba5d1a60102e4507/sonic_platform_base/sonic_sfp/sff8024.py#L104 2. To address 100G/40G optic, introduced a new key "QSFP28 - *" / "QSFP+ - *" (type_abbrv_name followed by a hyphen) . The same key can be defined in vendor specific media_settings.json. These changes doesn't modify the existing behavior but additionally addresses the above mentioned issues. Vendors can still add "Vendor_name + PN" in media_settings.json to program media settings if needed.
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