service: Add nfc services

Port #3594 from Citra: "citra_qt: Add Continue/Pause & Toggle Speed Limit hotkeys"

service: Add the lbl service

service: Add the btdrv service

These simply return the respective interface.

Adds the skeleton of the nfc service based off the information provided
on Switch Brew.

Implements these functions according to the information available on
Switch Brew.

Adds the skeleton of the lbl service based off the information provided
by Switch Brew.

kernel/timer: Make data members private where applicable

service/hid: Add missing services

Adds the skeleton for the btdrv service based off the information provided by Switch Brew

Port #3665 from Citra: "frontend: Log Citra version"

Port #3641 and #3702 from Citra (Small changes to default_ini and gitignore)

service: Add the grc:c service

service: Add the nim services

service: Add ldn services

service/sockets: Add missing socket services

 video_core/memory_manager: Avoid repeated unnecessary page slot lookups 

GPU: Allow using R16F as a render target format.

Adds the basic skeleton for the grc:c service based off the information
provided by Switch Brew.

Instead, we can just expose functions that return the queryable state
instead of letting anything modify it.

Adds the skeleton for the nim services based off information from Switch
Brew.

Adds ldn services based off information provided by Switch Brew.

service/lm: Minor changes

Implement R16_G16

service: Add ldr services

service: Add erpt and eupld services

service/nifm: Deduplicate interface code

Adds the skeleton for the ldr-related services based off the information
provided on Switch Brew.