Create BBEs for new worker related changes

[lochana-chathura]

Description

$subject.

Need to add BBEs for,

• alternate-receive-action
• multiple-receive-action
• conditional-send
• named-worker-decl with on-fail-clause

[lochana-chathura]

We need to arrange the new BBEs in the right order allowing the users to follow them sequentially.

• Since worker-on-fail-clause is related to error propagation in the workers, we can have it after the, inter-worker-failure-propagation BBE.

• The rest of the BBEs are using worker message passing(send/receive actions), hence they should come definitely after the inter-worker-message-passing BBE.

I would suggest the below order.

Concurrency:

1. Asynchronous function calls
2. Named workers
3. Sequence diagrams
4. Wait for workers
5. Strands
6. Named worker return values
7. Alternate wait
8. Multiple wait
9. Named workers and futures
10. Inter-worker message passing
11. Inter-worker failure propagation
12. Named worker with on fail clause
13. Synchronize message passing
14. Asynchronize message passing
15. Flush
16. Alternate receive
17. Multiple receive
18. Conditional send (Since we are using 16 and 17 in the 18 BBE example this has to come last)

[lochana-chathura]

It turned out Named worker with on-fail-clause depends on alternate-receive. (https://github.com/ballerina-platform/ballerina-distribution/pull/5296/files#r1557228582)

I would propose following new order.

1. Asynchronous function calls
2. Named workers
3. Sequence diagrams
4. Wait for workers
5. Strands
6. Named worker return values
7. Alternate wait
8. Multiple wait
9. Named workers and futures
10. Inter-worker message passing
11. Alternate receive
12. Multiple receive
13. Conditional send (we are using 11/12 here)
14. Inter-worker failure propagation
15. Named worker with on fail clause (we are using 11/12 here)
16. Synchronize message passing
17. Asynchronize message passing
18. Flush