ensure standalone binary can work without embedded cache

[williballenthin]

          The problem is that I am running the PyInstaller locally to test if the new binja backend works. If I run the PyInstaller command without generating the rule cache first. The generated executable will complain the rule cache is missing when I run it. Note, I added the above code snippet in the section `3. Compile binary using PyInstaller`

Originally posted by @xusheng6 in #1343 (comment)

[fariss]

@williballenthin @mr-tz do you think we can use exec_statement from PyInstaller.utils.hooks to cache the ruleset (using capa.rules.cache.cache_ruleset) before proceeding to build the executable? Would that be optimal?

[williballenthin]

.github/workflows/build.yml:55 already builds the cache and embeds it into the standalone binary.

[williballenthin]

ah i see so move that configuration into the PyInstaller to ensure the step can't be missed. neat!

yeah i think this is reasonable to try

[mr-tz]

nice, note the note:

As of v5.0, usage of this function is discouraged in favour of the new PyInstaller.isolated module.