changelog for version `1.5.0`

Docs: update root readme with last release (#31)

* chore: readme generation

* docs: updated readme file

* updated `CHANGELOG.md`

Submodules "IRSA" and "Helm-add-on" (#29)

* added irsa submodule

* added helm-add-on submodule

* relative links in readme for module IRSA

* example IRSA added

* chore: removed coment

* added cluster-autoscaler-helm-add-on example

* optional inputs from irsa submodule for helm-add-on module

* set minimum version of submodule in example and readme updated

* minimum version of module in example

* removed duplicate local block , similar condition is used for resource creation

* added descriptive comment on the helm-addon main.tf irsa reference

* chore: typo

* docs: updated readme for the submodules irsa and helmaddon

* modules examples tested with minimum eks version `1.3`

* updated `CHANGELOG.md`

updated changelog.md

add tf formatt action (#19)

Docs: Improved root Readme and docs configs (#10)

* docs: added changelog, updated root readme and restrict with terraform versions

* terraform-docs configs

* license move into root dir

update license file