Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

Two REDAME.md merged into one; all thirdparty recipes gatherd
inside meta-ohos-foundation subirectory

Signed-off-by: Robert Drab <robert.drab@huawei.com>

Adding recipes for third party ohosinit dependencies:
- cjson library - built directly from github, not from gitee
- libsec - library implementing secure versions of some standard functions

Recipe naming resembles original OHOS repository names
with the exception when the repository contains only
single library source code - in such case recipe name is the
same as the library name it provides

Signed-off-by: Robert Drab <robert.drab@huawei.com>