[Epic] Migrate Git-proxy to TypeScript

[fabiovincenzi]

Goal

Incrementally convert git-proxy from JavaScript to TypeScript.

Tasks

• [Setup] Add TypeScript to the Project #16
• [Setup] Add ESLint & Prettier Configuration #17
• [Migration] Convert Utility Functions to TS #18
• [Migration] Convert /src/proxy module to TS (core proxy logic) #19
• [Migration] Convert React Components to TS #20
• [Refactor] Remove Any and Ts-Ignore #21
• [Refactor] Strengthen TypeScript Config #22

Notes

• The conversion should be done incrementally to avoid breaking functionality.
• All new code should be written in TypeScript.