Added documentation on Appsmith's Software Architecture

[Rooney30]

Created a file called Architecture.md that will explain the architecture of Appsmith. Added formatting as well as illustrations.

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Description

Please include a summary of the changes and which issue has been fixed. Please also include relevant motivation and context. List any dependencies that are required for this change Links to Notion, Figma or any other documents that might be relevant to the PR These changes included an md file about Appsmith's Software Architecture.

Add a TL;DR when description is extra long (helps content team)

Fixes #3600

Add a page about Appsmith's architecture

Media

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Type of change

• This change requires a documentation update

How Has This Been Tested?

• Manual

Test Plan

Add Testsmith test cases links that relate to this PR

Issues raised during DP testing

Link issues raised during DP testing for better visiblity and tracking (copy link from comments dropped on this PR)

Checklist:

Dev activity

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] PR is being merged under a feature flag

QA activity:

• [ ] Test plan has been approved by relevant developers
• [ ] Test plan has been peer reviewed by QA
• [ ] Cypress test cases have been added and approved by either SDET or manual QA
• [ ] Organized project review call with relevant stakeholders after Round 1/2 of QA
• [ ] Added Test Plan Approved label after reveiwing all Cypress test

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[mohanarpit]

@Rooney30 Thanks for creating such a detailed writeup about Appsmith's architecture. My only concern with architecture documents is that they have a tendency to go out of date very quickly. Do you have any tips on how we can/should keep this docs updated with any changes happening to the code base?

[Rishabhkaul]

@mohanarpit Any update here?

@theparthacus some variant of this could even be a page on our website, once Arpit approves this PR, right?

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