Update Contributing docs

[ShohamBit]

1. Explain what the PR does

This PR is about #4406

• remove and add the documentation to the guidelines
• add sections on how to contribute to tracee source code
• improve docs on how to build tracee
• improve docs on how to build environment

"Replace me with make check-pr output"

2. Explain how to test it

Read the docs and check if its properly align with tracee design

3. Other comments

Close #4406

[geyslan]

First pass.

[rscampos]

First pass

Need to update the result of make help

tracee/docs/contributing/building/building.md

Line 42 in 540c8ce

make help

The difference:

• need to add: make tracee-operator and make clean-tracee-operator
• need to remove: make test-signatures

[rscampos]

Shouldn't we also add the following line in the make help?

$ METRICS=1 make ... # build enabling BPF metrics

[rscampos]

Some considerations:

1. maybe would be good to add the help output;
2. I think we should add some instructions do setup the cluster or point to a link with those instructions;
3. Please check the manifests and generate, it seems to not be working (maybe we need to open an issue).

[ShohamBit]

@rscampos, I'm having trouble building Tracee with the Kubernetes Makefile. I tried updating the Go version in the Dockerfile and running make from Ubuntu shell, but I'm still hitting errors. Could you offer some guidance?