LOW-665 Sensitivity SFT work

Added Sensitivity test Notebook:

• A heavily refactored version of Ravi's original notebook which splits large cells into smaller functions and adds some type annotations.
• Adjustments to the code to allow use of ska-low-mccs-calibration library which reduced the amount of custom code.
• Incorporation of Vulcan's test results class which allows test evidence to be uploaded to Jira

Added "All Channels Sensitivity notebook: Added another notebook which enables a selection of "allowed channels" (specified with start channel, stop channel and channel step parameters.)

This work is paired with work in the ska low aavs3 repo which includes the All Channels Sensitivity SFT as part of the automation cronjob

Some other tickets were created with work pushed to this branch:

• LOW-870 ( wrong path in SFTs for sft_utils after update to ska low jupyter)
• LOW-885 closest eep file for 181 and 182 MHZ is 181.5 and 182.5 mat files
• LOW-886 ( added stride parameters to all channels sfts after we found the runtime against all channels was too long)