Docs: Added prerequisites for argoCD, fork and clone repository, upst…

…reaming, common make targets, steps before submitting a PR. (argoproj#20540)

Signed-off-by: Shubham Zanzad <shubhamzanzad25@gmail.com>
Co-authored-by: Dan Garfield <dan@codefresh.io>

docs/developer-guide/contributors-quickstart.md

@@ -7,20 +7,49 @@ and the [toolchain guide](toolchain-guide.md).
 
 ## Getting Started
 
-### Install Go
+### Prerequisites
 
-<https://go.dev/doc/install/>
+Before starting, ensure you have the following tools installed with the specified minimum versions:
 
-Install Go with a version equal to or greater than the version listed in `go.mod` (verify go version with `go version`). 
+* Git (v2.0.0+)
+* Go (version specified in `go.mod` - check with `go version`)
+* Docker (v20.10.0+) Or Podman (v3.0.0+)
+* Kind (v0.11.0+) Or Minikube (v1.23.0+)
+* Yarn (v1.22.0+)
+* Goreman (latest version)
+
+### Fork and Clone the Repository
 
-### Clone the Argo CD repo
+1. Fork the Argo CD repository to your personal Github Account
 
+2. Clone the forked repository:
 ```shell
-mkdir -p $GOPATH/src/github.com/argoproj/ &&
-cd $GOPATH/src/github.com/argoproj &&
-git clone https://github.com/argoproj/argo-cd.git
+mkdir -p $GOPATH/src/github.com/argoproj/
+cd $GOPATH/src/github.com/argoproj/
+git clone https://github.com/YOUR-USERNAME/argo-cd.git
+```
+
+3. Add the upstream remote for rebasing:
+```shell
+cd argo-cd
+git remote add upstream https://github.com/argoproj/argo-cd.git
 ```
 
+### Install Required Tools
+
+1. Install development tools:
+```shell
+make install-go-tools-local
+make install-code-gen-tools-local
+```
+
+### Install Go
+
+<https://go.dev/doc/install/>
+
+Install Go with a version equal to or greater than the version listed in `go.mod` (verify go version with `go version`). 
+
+
 ### Install Docker or Podman
 
 #### Installation guide for docker:
@@ -103,8 +132,33 @@ DOCKER=podman make start-local ARGOCD_GPG_ENABLED=false
     If the UI is not working, check the logs from `make start-local`. The logs are `DEBUG` level by default. If the logs are
     too noisy to find the problem, try editing log levels for the commands in the `Procfile` in the root of the Argo CD repo.
 
+## Common Make Targets
+
+Here are some frequently used make targets:
+
+* `make start-local` - Start Argo CD locally
+* `make test` - Run unit tests
+* `make test-e2e` - Run end-to-end tests
+* `make lint` - Run linting
+* `make serve-docs` - Serve documentation locally
+* `make pre-commit-local` - Run pre-commit checks locally
+* `make build` - Build Argo CD binaries
+
 ## Making Changes
 
+### Before Submitting a PR
+
+1. Rebase your branch against upstream main:
+```shell
+git fetch upstream
+git rebase upstream/main
+```
+
+2. Run pre-commit checks:
+```shell
+make pre-commit-local
+```
+
 ### Docs Changes
 
 Modifying the docs auto-reloads the changes on the [documentation website](https://argo-cd.readthedocs.io/) that can be locally built using `make serve-docs` command.