4.4.0 : Upgrades to support weak stub building and multiple profile input support

Goal

• Upgrade System to support weak stub building.
• Also add support for multiple profile inputs

What's Changed

• PR: gh #154 : Upgrading autogenerate script to generate weak stubs by @kanjoe24 in #159
• Adding a demo directory to demo usage of weak, strong and dlopen by @kanjoe24 in #153
• PR: gh #78 : Adding tests in ut-core to support multiple inputs by @kanjoe24 in #158
• PR: #162 : Adding changes for creating weak stubs and linking the same in Makefile by @kanjoe24 in #163

Full Changelog: 4.3.0...4.4.0

Uplink Info : RDK-55375

Acceptance Criteria:

• Check if libweak_stubs_libs.so is created when BUILD_WEAK_STUBS_SRC is defined in Makefile
• Run the test binary with -p xyz.yaml -p abc.yaml arguments
• While genarating stubs using autogenerate script, the stubs created must be with weak attribute.