* feat: add X-Cypress-Request header in extension
* feat: add X-Cypress-Request header in CDP
* feat: add X-Cypress-Request header in electron
* feat: add ExtractRequestedWithAndCredentialsIfApplicable middleware stub to remove the newly added x-cypress-request header
* chore: change defaultHeaders variable name to requestModifications to more accurately reflect usage
* chore: condense ExtractIsAUTFrameHeader and ExtractRequestedWithAndCredentialsIfApplicable into ExtractCypressMetadataHeaders middleware
* test: add anti assertion for x-cypress-request and remove setting request verbage (as it does nothing yet)