Use inlineSourceMaps for tsc builds and other misc changes

[cmdcolin]

• Changes sourceMap->inlineSourceMap in tsconfig, and remove 'src' directory from package.json files
• Centralizes a couple tsconfig options instead of redeclaring them in every file
• Renames "es5" to "commonjs" since this is a better descriptor of what the dist build actually is
• Uses symlinks for all plugin tsconfigs. I tried also referring to the tsconfigs at a relative path but that is a bit tricky

[codecov]

Codecov Report

Merging #3771 (9c860d3) into main (7668ebe) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3771      +/-   ##
==========================================
- Coverage   64.11%   64.10%   -0.02%     
==========================================
  Files         987      987              
  Lines       29663    29663              
  Branches     7094     7094              
==========================================
- Hits        19018    19015       -3     
- Misses      10481    10484       +3     
  Partials      164      164              

see 1 file with indirect coverage changes

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[cmdcolin]

It actually occurred to me that this will eliminate the ability to 'import from the src' directory which the bbimber lab is currently doing BimberLab/DiscvrLabKeyModules#205

I think it is not necessarily a supported workflow that they have though so we may want to work with them to find a work-around

[cmdcolin]

I tested this against https://github.com/joneubank/minimal-reproduce-jbrowse-component-build by copying the "packed" resolutions similar to our component_tests and it appeared to fix the issue that was seen there

[cmdcolin]

just realized that using inlineSourceMap does not suffice for removing src directory, the inlineSourceMap will still refer to a src directory. the alternative is just not having src maps. might not be too bad that way...our code isn't extensively mangled by the compilation

[cmdcolin]

(the source map, whether inline or external .map file, just map stores offsets in built artifacts still with the src directory it came from)