fix(cmd-api-server): no CLI args causes crash

[petermetz]

Describe the bug

When the presence of the help command gets examined it is assumed that there's at least one CLI arg provided. When this is not the case, a crash occurs.

To Reproduce

RUN npm i @hyperledger/cactus-cmd-api-server@${NPM_PKG_VERSION} --production

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["node", "node_modules/@hyperledger/cactus-cmd-api-server/dist/lib/main/typescript/cmd/cactus-api.js"]

Expected behavior

No crash when there are no CLI args for the API server (since we can fully configure it through ENV or config file as well.

Logs/Stack traces

$ docker run --rm --publish 3000:3000 --publish 4000:4000 cas                                                                    
[2021-04-14T05:07:15.560Z] INFO (config-service): Configuration validation OK.                                                                                                                                                      
[2021-04-14T05:07:15.561Z] ERROR (cactus-api): Cactus API server crashed:  TypeError: Cannot read property 'includes' of undefined
    at main (/usr/src/app/node_modules/@hyperledger/cactus-cmd-api-server/dist/lib/main/typescript/cmd/cactus-api.js:17:25)
    at launchApp (/usr/src/app/node_modules/@hyperledger/cactus-cmd-api-server/dist/lib/main/typescript/cmd/cactus-api.js:30:15)
    at Object.<anonymous> (/usr/src/app/node_modules/@hyperledger/cactus-cmd-api-server/dist/lib/main/typescript/cmd/cactus-api.js:40:5)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)

Screenshots

N/A

Cloud provider or hardware configuration:

Dev machine

Operating system name, version, build:

Alpine Linux (container)

Hyperledger Cactus release version or commit (git rev-parse --short HEAD):

0.4.1

Hyperledger Cactus Plugins/Connectors Used

N/A

Additional context

N/A

cc: @takeutak @sfuji822 @hartm @jonathan-m-hamilton @AzaharaC @jordigiam @kikoncuo @jagpreetsinghsasan