prepare for worker bundling

[lifeart]

related to: #305

Before land:

• ensure disabling sync fs access does not break main logic
• ensure we don't trying to load els-addons in worker mode (import scripts not supported)
• ensure we don't trying to use template-lint in worker mode, but we could explore bundling here: feat: bundle web-worker (nodeless) version of linter ember-template-lint/ember-template-lint#2120
• add async fs tests
• land light walkAsync version? (+ensure all calls is async)
• figure out config option to get async-fs working in node
• move _sendCommand implementation to server (project?) api

This Mr lands:

• async fs provider
• minimal draft async fs api
• walkSync -> walkAsync replacement
• async fs provider tests
• sendCommand Server method
• drops node 10 support
• removes unneded deps
• breaking: server options configuration
• full fs async api support

[codecov]

Codecov Report

Merging #306 (dafbe28) into component-context-info-origin (16f5203) will increase coverage by 0.31%.
The diff coverage is 75.25%.

@@                        Coverage Diff                        @@
##           component-context-info-origin     #306      +/-   ##
=================================================================
+ Coverage                          68.82%   69.14%   +0.31%     
=================================================================
  Files                                 42       44       +2     
  Lines                               3474     3714     +240     
  Branches                             733      774      +41     
=================================================================
+ Hits                                2391     2568     +177     
- Misses                              1080     1144      +64     
+ Partials                               3        2       -1     

Impacted Files	Coverage Δ
src/utils/addon-api.ts	61.53% <33.33%> (+1.05%)	⬆️
src/utils/fs-utils.ts	35.89% <35.89%> (ø)
src/project.ts	73.91% <45.45%> (-3.02%)	⬇️
src/template-linter.ts	52.29% <66.66%> (-0.60%)	⬇️
src/fs-provider.ts	82.14% <79.66%> (-7.52%)	⬇️
src/utils/walk-async.ts	85.04% <85.04%> (ø)
src/server.ts	64.86% <88.46%> (+0.40%)	⬆️
src/utils/layout-helpers.ts	91.86% <89.28%> (-0.10%)	⬇️
src/project-roots.ts	88.59% <100.00%> (ø)
src/start-server.ts	88.88% <100.00%> (+3.17%)	⬆️
... and 5 more

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