Call `createClientWithAutoPoll` directly from `createClient` to avoid undefined `this` in strict mode with destructured require

[Conrad2134]

Describe the purpose of your pull request

When calling createClient from Node using a destructured require() statement, createClient will throw the following error:

TypeError: Cannot read property 'createClientWithAutoPoll' of undefined

Due to TypeScript invoking "strict mode"; for the compiled code, this is undefined in createClient only when invoked directly (because of the destructuring, in this case). There's a few different ways to work around this, and so it shouldn't block anyone, but this change should fix it for that case.

I tested the fix with Node 14 (plain JavaScript) and TypeScript (via ts-node). I tried multiple styles of imports and didn't have any issues.

Reproduction

I reproduced this issue by creating a test.js file in the repo and executing it with node test.js.

const {createClient} = require('./lib/client');
const client = createClient("SDKKEY");

Requirement checklist (only if applicable)

• [ ] I have covered the applied changes with automated tests.
• [x] I have executed the full automated test set against my changes.
• [x] I have validated my changes against all supported platform versions. (See notes above, but I can test with other versions of Node if needed.)
• [x] I have read and accepted the contribution agreement.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov[bot]]

Codecov Report

Merging #31 (a304e63) into master (a6c9d4f) will decrease coverage by 0.96%. The diff coverage is 100.00%.

:exclamation: Current head a304e63 differs from pull request most recent head 66cefc5. Consider uploading reports for the commit 66cefc5 to get more accurate results

@@            Coverage Diff             @@
##           master      #31      +/-   ##
==========================================
- Coverage   76.47%   75.51%   -0.97%     
==========================================
  Files           2        2              
  Lines          51       49       -2     
  Branches        9        9              
==========================================
- Hits           39       37       -2     
  Misses         12       12              

Impacted Files	Coverage Δ
src/client.ts	100.00% <100.00%> (ø)

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