feat: add support for FHIR subscriptions

[carvantes]

Same as #573, but adapted to work on the SMART branch.

There is nothing specific to SMART in the Subscriptions implementation.

I squashed Most of the Subscriptions changes into a single commit since that made it easier to deal with conflicts between develop and smart-develop

• feat: add support for FHIR subscriptions
• test: add enableSubscriptions flag on deployment
• perf: partial failures for restHook Lambda (perf: partial failures for restHook Lambda #579)
• chore: bump fwoa dependencies
• chore: fix tests and lint issues
• downgrade escape-string-regex to fix build

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #585 (9ea4906) into smart-develop (c91e731) will decrease coverage by 4.40%.
The diff coverage is 93.49%.

@@                Coverage Diff                @@
##           smart-develop     #585      +/-   ##
=================================================
- Coverage          94.84%   90.44%   -4.41%     
=================================================
  Files                  1        8       +7     
  Lines                 97      293     +196     
  Branches              14       58      +44     
=================================================
+ Hits                  92      265     +173     
- Misses                 5       27      +22     
- Partials               0        1       +1     

Impacted Files	Coverage Δ
src/config.ts	78.18% <66.66%> (ø)
...c/subscriptions/reaperLambda/subscriptionReaper.ts	88.23% <88.23%> (ø)
src/subscriptions/restHookLambda/allowListUtil.ts	95.12% <95.12%> (ø)
src/index.ts	64.70% <100.00%> (ø)
src/subscriptions/restHookLambda/restHook.ts	100.00% <100.00%> (ø)
src/implementationGuides/loadCompiledIGs.ts	90.00% <0.00%> (ø)
src/authZConfig.ts	100.00% <0.00%> (ø)

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[github-actions]

'This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.’