Added: Add App Bridge Login Flow

[Banibrata-Manna]

Related Issue: #429

Added App Bridge Login Flow for Shopify Embedded App User Login. And removed usage of getAppLoginUrl from DxpLogin since it's not needed on DxpLogin now.

[ravilodhi]

@gemini-code-assist please review this PR.

[gemini-code-assist]

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[ravilodhi]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a login flow for embedded Shopify apps using App Bridge. The changes are mostly in DxpLogin.vue and new utility functions in src/utils/index.ts.

My review has identified a few critical and high-severity issues:

• A critical logic bug in the new openPosScanner utility function will cause it to not work as expected.
• The project now depends on @shopify/app-bridge-utils, which is a deprecated package and should be replaced.
• There's a potential for an unhandled exception in DxpLogin.vue due to unsafe parsing of an environment variable.

Additionally, I've pointed out several medium-severity issues, including leftover console.log statements, throwing strings instead of Error objects, and a confusing TODO comment. Please address these points to improve the code's robustness and maintainability.

[Banibrata-Manna]

Related PRs

Fulfillment - hotwax/fulfillment#1352
Receiving - hotwax/receiving#549
inventory-count - hotwax/inventory-count#794
oms-api - hotwax/oms-api#122

[Banibrata-Manna]

Shopify claims to use Socket mobile Scanners in Shopify POS and connect with them seemlessly and manage them in settings, it has been observed that if we connect a scanner with Shopify POS then that scanner only fills out the Shopify POS inputs and not the input fields in Shopify POS embedded apps.