The `esp_https_ota.h` header includes `bootloader_common.h` from the
`bootloader_support` component, but the components CMakeLists.txt does not
depend on the `bootloader_support` component.
This causes compilation to fail when the header is included, unless the
component that the header belongs already depends on `bootloader_support`.
As the header is only needed in the `esp_https_ota.c` source file,
add a `PRIV_REQUIRES` for `bootloader_support` and move the include into the
.c file.
