feat: enable nested routers by introducing RecursivelyProcessAppRouter

[oliverbutler]

Fixes #47 (finally!!!)

[changeset-bot]

🦋 Changeset detected

Latest commit: e04f43f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
@ts-rest/core	Minor
@ts-rest/example-contracts	Minor
@ts-rest/express	Minor
@ts-rest/nest	Minor
@ts-rest/next	Minor
@ts-rest/open-api	Minor
@ts-rest/react-query	Minor
@ts-rest/solid-query	Minor

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Name	Status	Preview	Updated
ts-rest	✅ Ready (Inspect)	Visit Preview	Jan 22, 2023 at 11:15PM (UTC)

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #138 (e04f43f) into main (ec4a10e) will decrease coverage by 19.10%.
The diff coverage is 75.00%.

@@             Coverage Diff             @@
##             main     #138       +/-   ##
===========================================
- Coverage   84.57%   65.47%   -19.10%     
===========================================
  Files           9        9               
  Lines         188      252       +64     
  Branches       44       60       +16     
===========================================
+ Hits          159      165        +6     
- Misses         19       77       +58     
  Partials       10       10               

Impacted Files	Coverage Δ
libs/ts-rest/core/src/lib/dsl.ts	70.00% <ø> (ø)
libs/ts-rest/express/src/lib/ts-rest-express.ts	13.23% <75.00%> (ø)

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[Gabrola]

This is great! 🔥

[michaelangeloio]

amazing work!