Add Support for Multiple connections

[raschan]

This PR:

• [x] adds support to handle multiple AMQP connections
• [x] adds example app for connecting multiple AMQP brokers
• [x] updates readme to reflect changes

[codecov[bot]]

Codecov Report

Merging #40 (8e39b69) into master (4163e8d) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master       #40    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           29        37     +8     
  Lines          384       520   +136     
  Branches        57        80    +23     
==========================================
+ Hits           384       520   +136     

Impacted Files	Coverage Δ
src/domain/listener-metadata.domain.ts	100.00% <ø> (ø)
src/enum/send-state.enum.ts	100.00% <ø> (ø)
src/util/functions/sleep.function.ts	100.00% <ø> (ø)
src/constant/amq.constant.ts	100.00% <100.00%> (ø)
src/constant/index.ts	100.00% <100.00%> (ø)
src/constant/queue-module.constant.ts	100.00% <100.00%> (ø)
src/decorator/index.ts	100.00% <100.00%> (ø)
...-amq-connection/inject-amq-connection.decorator.ts	100.00% <100.00%> (ø)
src/decorator/listen/listen.decorator.ts	100.00% <100.00%> (ø)
src/domain/message-control.domain.ts	100.00% <100.00%> (ø)
... and 34 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update b88a68a...8e39b69. Read the comment docs.