Download EDGAR endpoint

[mirenz1]

Provide interface to get a CARL compatible EDGAR version for my target architecture

Tasks:

• [ ] CARL should provide an HTTP endpoint to download EDGAR (openly accessible)
  • [ ] Serve debug binary in development mode
  • [ ] Serve directory with release binary of EDGAR for the requested architecture
• [ ] A distribution build should include the EDGAR release within CARL's distribution
• [ ] Add documentation on how to configure

EDGAR on peer can use this interface later to check if there is a new version available and can execute a self-update on the peer (not part of this story).

[mbfm]

We should use the distribution-task for EDGAR. It turns out that this was already not the case for CLEO, so this should be corrected first:

• [x] cargo ci carl distribution → CLEO via distribution-task
• [x] In CARL, where files are added, now need to load from target/ci/distribution/opendut-cleo/*.tar.gz
• [x] .tar.gz unpack into temp-dir (use https://crates.io/crates/tempfile/), akin to https://github.com/eclipse-opendut/opendut/blob/fc68ff9c334ae92ad67cdcc9caf1fc81465b7ea4/.ci/xtask/src/packages/cleo.rs#L107-L114
• [x] Generate files into temp-dir (certificates etc.).
• [x] Compress files in .tar.gz, akin to https://github.com/eclipse-opendut/opendut/blob/fc68ff9c334ae92ad67cdcc9caf1fc81465b7ea4/.ci/xtask/src/tasks/distribution.rs#L117-L136
• [x] Put .tar.gz where it will be served.