fix(misc): nx init should add .nx/cache to gitignore

[AgentEnder]

Current Behavior

Running nx init doesn't add .nx/cache to the gitignore

Expected Behavior

Running nx init adds .nx/cache to the gitignore

Related Issue(s)

Fixes #

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1 Ignored Deployment

Name	Status	Preview	Updated (UTC)
nx-dev	⬜️ Ignored (Inspect)	Visit Preview	Oct 31, 2023 8:01pm

[nx-cloud]

☁️ Nx Cloud Report

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✅ Successfully ran 6 targets

• nx affected --target=e2e --base=8ec589d0b90c13fe02dc6f09497af3cefde9e650 --head=b3abd88257105c2483f022466bfdfadeba3a6dea --parallel=1
• nx affected --targets=lint,test,build --base=8ec589d0b90c13fe02dc6f09497af3cefde9e650 --head=b3abd88257105c2483f022466bfdfadeba3a6dea --parallel=3
• nx run-many -t check-imports check-commit check-lock-files check-codeowners documentation --parallel=1 --no-dte
• nx-cloud record -- nx format:check --base=8ec589d0b90c13fe02dc6f09497af3cefde9e650 --head=b3abd88257105c2483f022466bfdfadeba3a6dea
• nx documentation --no-dte
• nx affected -t e2e-macos --parallel=1 --base=8ec589d0b90c13fe02dc6f09497af3cefde9e650 --head=b3abd88257105c2483f022466bfdfadeba3a6dea

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[github-actions]

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