[pickers] Add support for `@js-joda/core`

[MMauro94]

• The issue is present in the latest release.
• I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

Currently when using a DatePicker in MUI v5 with JsJodaAdapter (from @date-io/js-joda) an uncaught exception is thrown when changing date. The exception is: DateTimeException: Unable to obtain LocalTime TemporalAccessor: 2021-10-06, type LocalDate.

Expected Behavior 🤔

The picker does not crash and the new value is passed to the onChange function.

Steps to Reproduce 🕹

<LocalizationProvider dateAdapter={JsJodaAdapter}>
  <DatePicker
    value={LocalDate.of(2021, 10, 6)}
    onChange={(d) => console.log(d)}
    renderInput={(p) => <TextField {...p} />}
  />
</LocalizationProvider>

Sandbox link

Context 🔦

The curlpit seems to be on this line, when calling utils.mergeDateAndTime

Your Environment 🌎

`npx @mui/envinfo`

  System:
    OS: Windows 10 10.0.19043
  Binaries:
    Node: 14.17.3 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.10 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 6.14.13 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: Not Found
    Edge: Spartan (44.19041.1023.0), Chromium (94.0.992.38)

Don't know why it doesn't get detected, but I'm using Chrome 94.0.4606.71

[flaviendelangle]

Transfering this issue because it relates to a comment in the code that we should fix.