build(sourcemap): add "sourcesContent" to the output source map

[zengguirong]

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What have you changed?

Set the inlineSources option to true in tsconfig.json.

This is because in the current source map file, I found the sources field that is pointing to the source location (such as "sources":["../src/index.ts"] in https://cdn.jsdelivr.net/npm/@formily/[email protected]/esm/index.js.map). But the src folder is not inclued in the published package.
When using some esm bundlers such as Vite, the dev server could not find the source file and finally response error with code 404, which means that I can not debug the formily source in browser with source map enabled when using Vite.

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[codecov]

Codecov Report

Merging #2399 (116b265) into formily_next (6544abb) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           formily_next    #2399   +/-   ##
=============================================
  Coverage         95.34%   95.34%           
=============================================
  Files               140      140           
  Lines              6129     6129           
  Branches           1536     1536           
=============================================
  Hits               5844     5844           
  Misses              280      280           
  Partials              5        5           

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[janryWang]

麻烦签一下CLA