Need to add simple ci pipeline to github for the project with unit-test execution, checking critical size of wasm binary, etc.

Need to add Docker image for isolated wasm compilation. It should be an additional / alternative way of compiling.

What shall be inside the image:

• access to env variables from .env file
• wabt utilities installing from a tarball for use, wabt version shall be taken from WABT_BUILD_VERSION env variable
• bulid.sh execution

There will be a lot of intermediate data during the demux process like pts/dts timestamps, pes positions in linear memory and other. This data should store in a separated memory block, need to organize it. It should be scalable

PES packet must be parsed and recorded to the metadata memory block for further decoding.

What data is needed:

• pid which from transport_packet
• offset in the linear memory (from es_offset to es_len)
• length
• pts and dts timestamps

There should be no problem to write new data as needed in the future.

It will be better if all codebase will be separated into single .wat files as self-sufficient modules. But how to merge them into a common .wat file when compiling? Need to find some tool or write some solution. It is also need to avoid possible problems like collisions, etc.

All .wat files live in src directory.