Make use of new mwalib >=v1.* exposed metafits attributes

[gsleap]

Build with mwalib >=1.0.0 and use the following newly exposed metafits values:

• Rfinput::rec_type which allows Birli to differentiate between the different receiver types (may or may not be useful right now)
• MetafitsContext::oversampled will allow Birli to alter the passband gains applied to each coarse channel as OS data will have very different values.
• MetafitsContext::deripple_applied and MetafitsContext::deripple_param will allow Birli to once again alter the passband gains applied to each coarse channel as the deripple will have very different values.

[cjordan]

This work ultimately requires Marlu to use the new mwalib. I can get started on this Soon™, maybe in a couple of days; I'm hoping to release the long-overdue hyperdrive 0.3.0 shortly.

[d3v-null]

Status update: Birli is using Marlu 0.15 and mwalib 1.8.2 now, so all of these are accessible.

1. is this issue: Correct for nonlinear phase offsets between receivers #147 , I have everything I need to start this now, but will probably need to spend a bit more time on hyperdrive first.
2. oversampling requires knowing what the oversampled pfb shape is, will require Jake's expertise here.
3. deripple params have not been defined as far as I can tell from the wiki. https://mwatelescope.atlassian.net/wiki/spaces/MP/pages/24969594/Metafits+files . From my understanding, birli needs to disable pfb passband corrections when deripple is enabled?

[gsleap]

RE: Q3 - As of Nov 2024 there are no DR_PARAMs present in any existing or planned metadata. RE disabling passband corrections it all depends what Birli's passband corrections do versus what deripple does (I don't know either one in any detail! @shrydar might be able to help determine what exactly the MWAX deripple does).