docs: add new images to Getting Started DOC-1333 (#4512)

* docs: add new images to Getting Started DOC-1333

* Optimised images with calibre/image-actions

* Optimised images with calibre/image-actions

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Co-authored-by: vault-token-factory-spectrocloud[bot] <133815545+vault-token-factory-spectrocloud[bot]@users.noreply.github.com>
(cherry picked from commit 6a6e2b3)

_partials/getting-started/_getting-started_create-cluster-profile_spacetastic-end.mdx

@@ -11,4 +11,6 @@ in good spirits, as the process has gone smoothly.
 > the profile. What are your thoughts, Wren? Have you remained a Palette skeptic?"
 >
 > Wren laughs. "Yes, I admit cluster profiles are very convenient. I'm not convinced yet, but I am already starting to
-> understand how Palette could make us more productive. Let's keep exploring and get something deployed with it!"
+> understand how Palette could make us more productive. Let's keep exploring and get something deployed with it!"
+
+![The Spacetastic team has created a cluster profile](/getting-started/getting-started_create-cluster-profile_profile-created.webp)

_partials/getting-started/_getting-started_create-cluster-profile_spacetastic-intro.mdx

@@ -13,4 +13,6 @@ begin to map out all the dependencies of their systems and infrastructure.
 > Kai smiles and nods. "It's definitely been an out of this world ride!" they say. "I have a similar feeling when I
 > think about the infrastructure that I built in the early days as Platform Engineer. I will add our infrastructure
 > layers to your list. This process has the added bonus of giving us a chance to review which dependencies need to be
-> updated, so Meera, our security expert, will be happy too."
+> updated, so Meera, our security expert, will be happy too."
+
+![The Spacetastic team stands next do a board with sticky notes of their system dependencies](/getting-started/getting-started_create-cluster-profile_system-dependencies.webp)

_partials/getting-started/_getting-started_setup_spacetastic-end.mdx

@@ -11,3 +11,5 @@ Palette dashboard. They are ready to learn about Palette.
 >
 > Wren joins Kai in looking at the Palette dashboard. "I'm interested to learn more, but I never believe in _magic_
 > solutions. We should review their Getting Started material in detail to ensure that Palette is a good fit for us."
+
+![The Spacetastic team have set up Palette](/getting-started/getting-started_setup_palette-setup-complete.webp)

_partials/getting-started/_getting-started_setup_spacetastic-intro.mdx

@@ -22,4 +22,6 @@ of benefits that their new platform should provide.
 > "I agree with both of you, but I want to review the developer experience in detail before we agree to implement a new
 > solution in production." says Wren, whose main concern as Founding Engineer is to ensure development velocity does not
 > decrease. "Let's reach out to Spectro Cloud to create an account. Then, we can make an informed decision after we
-> complete their Getting Started tutorials."
+> complete their Getting Started tutorials."
+
+![The Spacetastic team are reading Palette Getting Started](/getting-started/getting-started_setup_getting-started-discovery.webp)