Add react-native directives to each package.json

[amika-sq]

In React Native, the directive priority order goes:
react-native > browser > main

The react-native directive was previously not present, so it would instead use the values from the browser directive. This caused react native to consume ./dist/browser.js, which causes issues in that environment. This required workarounds in react native apps that consume it.

To fix, this PR directly sets values for ./dist/esm/src/index.js and ./dist/cjs/src/index.js to always point to the esm version.

[codecov]

Codecov Report

Merging #137 (b700a30) into main (69ab8a5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #137   +/-   ##
=======================================
  Coverage   64.74%   64.74%           
=======================================
  Files          33       33           
  Lines        3551     3551           
  Branches      198      198           
=======================================
  Hits         2299     2299           
  Misses       1250     1250           
  Partials        2        2           

Components	Coverage Δ
common	0.00% <ø> (ø)
credentials	0.00% <ø> (ø)
crypto	0.00% <ø> (ø)
dids	48.61% <ø> (ø)
web5	81.51% <ø> (ø)
web5-agent	0.00% <ø> (ø)
web5-proxy-agent	0.00% <ø> (ø)
web5-user-agent	79.60% <ø> (ø)