Move the `dist` target of `mke2fs` to `build/core/tasks`

Because `mke2fs`, `make_f2fs`, and `make_f2fs_casefold` have
`recovery_available` set to true, Soong forcibly adds a new variation
with a `_recovery` suffix to the existing variations. If this is
directly added to the `dist` of the corresponding module, it will cause
duplication of the `android_recovery_<arch>/meta_lic` and
`android_<arch>/meta_lic` files.

Therefore, it is temporarily moved to `build/core/tasks`. Once the
issues are resolved, they will be moved to the corresponding modules.

Bug: 349741178
Test: m sdk dist
Change-Id: I1bea3aa2f42334c9ed14bf766aaa7e6f428ed35a