[now projects] Add subcommand alias for now project

[TooTallNate]

Fixes #2162.

[codecov-io]

Codecov Report

Merging #2750 into canary will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           canary    #2750      +/-   ##
==========================================
- Coverage   13.77%   13.72%   -0.05%     
==========================================
  Files         262      262              
  Lines       10587    10555      -32     
  Branches     1365     1364       -1     
==========================================
- Hits         1458     1449       -9     
+ Misses       8980     8957      -23     
  Partials      149      149

Impacted Files	Coverage Δ
src/util/dev/server.ts	61.11% <0%> (+0.06%)	⬆️
src/util/get-files.ts	91.01% <0%> (+0.9%)	⬆️
src/util/dev/builder.ts	73.11% <0%> (+1.01%)	⬆️
src/util/dev/builder-cache.ts	71.2% <0%> (+1.35%)	⬆️
src/util/output/create-output.ts	40.9% <0%> (+3.4%)	⬆️
src/util/dev/yarn-installer.ts	84.74% <0%> (+3.79%)	⬆️
src/util/dev/router.ts	83.33% <0%> (+4.76%)	⬆️

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