feat: enables inline sourcemaps for packages for developer experience

[krpeacock]

Description

After an issue raised with the Create React App experience, we would like to enable enhanced sourcemaps, since we aren't including the source code in our packages

Before:

{"version":3,"file":"index.js","sourceRoot":"","sources":["../../../src/agent/index.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;AAGA,wCAAsB;AACtB,yCAAuB;AACvB,0CAAwB;AAMxB,SAAgB,eAAe;IAC7B,MAAM,KAAK,GACT,OAAO,MAAM,KAAK,WAAW;QAC3B,CAAC,CAAC,OAAO,MAAM,KAAK,WAAW;YAC7B,CAAC,CAAC,OAAO,IAAI,KAAK,WAAW;gBAC3B,CAAC,CAAC,SAAS;gBACX,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC,KAAK;YACjB,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,KAAK;QACnB,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,KAAK,CAAC;IAEtB,IAAI,CAAC,KAAK,EAAE;QACV,MAAM,IAAI,KAAK,CAAC,0BAA0B,CAAC,CAAC;KAC7C;IAED,OAAO,KAAK,CAAC;AACf,CAAC;AAfD,0CAeC"}

After:

{"version":3,"file":"index.js","sourceRoot":"","sources":["../../../src/agent/index.ts"],"names":[],"mappings":";;;;;;;;;;;;;AAGA,wCAAsB;AACtB,yCAAuB;AACvB,0CAAwB;AAMxB,SAAgB,eAAe;IAC7B,MAAM,KAAK,GACT,OAAO,MAAM,KAAK,WAAW;QAC3B,CAAC,CAAC,OAAO,MAAM,KAAK,WAAW;YAC7B,CAAC,CAAC,OAAO,IAAI,KAAK,WAAW;gBAC3B,CAAC,CAAC,SAAS;gBACX,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC,KAAK;YACjB,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,KAAK;QACnB,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,KAAK,CAAC;IAEtB,IAAI,CAAC,KAAK,EAAE;QACV,MAAM,IAAI,KAAK,CAAC,0BAA0B,CAAC,CAAC;KAC7C;IAED,OAAO,KAAK,CAAC;AACf,CAAC;AAfD,0CAeC","sourcesContent":["import { GlobalInternetComputer } from '../index';\nimport { Agent } from './api';\n\nexport * from './api';\nexport * from './http';\nexport * from './proxy';\n\ndeclare const window: GlobalInternetComputer;\ndeclare const global: GlobalInternetComputer;\ndeclare const self: GlobalInternetComputer;\n\nexport function getDefaultAgent(): Agent {\n  const agent =\n    typeof window === 'undefined'\n      ? typeof global === 'undefined'\n        ? typeof self === 'undefined'\n          ? undefined\n          : self.ic.agent\n        : global.ic.agent\n      : window.ic.agent;\n\n  if (!agent) {\n    throw new Error('No Agent could be found.');\n  }\n\n  return agent;\n}\n"]}

Checklist:

• My changes follow the guidelines in CONTRIBUTING.md.
• The title of this PR complies with Conventional Commits.
• I have edited the CHANGELOG accordingly.
• I have made corresponding changes to the documentation.