feat(cron-capability-provider): Add a distributed cronjob provider

[Aditya1404Sal]

• Also adding a component that exports that provider (though I haven't pushed it to a registry).
• it's currently working thru the [overrides] that point to the local wit artifact.

Feature or Problem

Related Issues

Release Information

Consumer Impact

Testing

Unit Test(s)

Acceptance or Integration

Manual Verification

wash build works (Created both the provider archive and the wasm component binaries) made sure that the Cargo.toml and wasmcloud.toml are in working condition.

[JohnFrrr]

Hi! I need to create a similar provider, and this one is being a great starting point, thank you!
I just had to make 3 changes in the wadm.yml to make it work, without any of them there was either an error in the deployment or an internal error in the app. Not sure if this is the right way to solve it, but it's what worked for me, so just sharing my solution:

1. Add annotations:
   Before:

metadata:
  name: cron-scheduler-demo

After:

metadata:
  name: cron-scheduler-demo
  annotations:
    version: v0.0.1
    description: "A cron job scheduler demo"

2. Change "target_config:" to "source.config:":

Before:

target_config:
  - name: cron-config

After:

source:
  config:
    - name: cron-config

3. Remove the semicolon at the end of the JSON:
   Before:
   cronjobs: job_1=0 * 1 * * ?:{"x1":"foo","x2":"bar"};
   After:
   cronjobs: job_1=0 * 1 * * ?:{"x1":"foo","x2":"bar"}

[brooksmtownsend]

Well done @Aditya1404Sal !! This looks good to me, the only ask I have is to take a look at @JohnFrrr's feedback and push changes if necessary!

[Aditya1404Sal]

@JohnFrrr , @brooksmtownsend Thank you so much for trying it out and reviewing it !! I'll definitely get those changes incorporated as soon as I can !!! 😄