feat: make maximizing build space optional (#18)

* feat: make maximizing build space optional

Reasoning: many users don't need this, but it takes kind of a long time. #16

* fix: use singlequotes for strings

* docs: use singlequotes in description

action.yml

@@ -24,6 +24,13 @@ inputs:
 
       Example: `${{ github.event.number }}`
     required: true
+  maximize_build_space:
+    description: |
+      Whether to run the unwanted software remover to maximize build space in the GitHub builder.
+      Use this if your builds are taking too much space.
+      Input must match the string 'true' for the step to be enabled.
+    required: false
+    default: 'false'
   registry:
     description: |
       The container registry to push the built image to.
@@ -43,6 +50,7 @@ runs:
     # so it's best to remove unneeded softawre
     - name: Maximize build space
       uses: ublue-os/remove-unwanted-software@v6
+      if: ${{ inputs.maximize_build_space == 'true' }}
 
     # clones user's repo
     - uses: actions/checkout@v4