Add --clean=<config id, config id> option

[jwinarske]

• Change existing --clean to support selective config id cleaning
• Add clean object to configs, similar to post_cmds object
• Add parameter all which would implement the existing clean

[jwinarske]

example

        "do_clean": [
            {
                "cwd": "${AMD_ACS_WAYLAND_BUILD_DIR}",
                "cmds": [
                    "ninja -t clean"
                ]
            },
            {
                "cwd": "${AMD_ACS_WAYLAND_PROTOCOLS_BUILD_DIR}",
                "cmds": [
                    "ninja -t clean"
                ]
            },
            {
                "cwd": "${AMD_ACS_WESTON_BUILD_DIR}",
                "cmds": [
                    "ninja -t clean"
                ]
            }
        ]