scripts/resulttool: enable manual execution and result creation

scripts/resulttool: enable manual execution and result creation

Integrated “manualexecution” operation to resulttool scripts.
Manual execution script is a helper script to execute all manual
test cases in baseline command, which consists of user guideline
steps and the expected results. The last step will ask user to
provide their input to execute result. The input options are
passed/failed/blocked/skipped status. The result given will be
written in testresults.json including log error from the user
input and configuration if there is any.The output test result
for json file is created by using OEQA library.

The configuration part is manually key-in by the user. The system
allow user to specify how many configuration they want to add and
they need to define the required configuration name and value pair.
In QA perspective, "configuration" means the test environments and
parameters used during QA setup before testing can be carry out.
Example of configurations: image used for boot up, host machine
distro used, poky configurations, etc.

The purpose of adding the configuration is to standardize the
output test result format between automation and manual execution.

To use these scripts, first source oe environment, then run the
entry point script to look for help.
        $ resulttool

To execute manual test cases, execute the below
        $ resulttool manualexecution <manualjsonfile>

By default testresults.json store in <build_dir>/tmp/log/manual/

[YOCTO #12651]

Signed-off-by: Mazliana <mazliana.mohamad@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>