chore(aws-lambda): convert package to typescript

[dphang]

No description provided.

[codecov]

Codecov Report

Merging #1305 (4027898) into master (8b59562) will decrease coverage by 0.14%.
The diff coverage is 70.66%.

@@            Coverage Diff             @@
##           master    #1305      +/-   ##
==========================================
- Coverage   83.82%   83.67%   -0.15%     
==========================================
  Files          96       97       +1     
  Lines        3307     3290      -17     
  Branches      972      970       -2     
==========================================
- Hits         2772     2753      -19     
- Misses        472      476       +4     
+ Partials       63       61       -2     

Impacted Files	Coverage Δ
...ges/serverless-components/aws-lambda/serverless.js	0.00% <0.00%> (-73.92%)	⬇️
...ges/serverless-components/aws-lambda/test-utils.ts	100.00% <ø> (ø)
.../serverless-components/aws-lambda/src/component.ts	71.87% <71.87%> (ø)
...ages/serverless-components/aws-lambda/src/utils.ts	73.19% <77.77%> (ø)

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