Update cheatsheets

tldr/loft

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# loft
+
+> Install and manage multi-tenant Kubernetes environments using virtual clusters.
+> More information: <https://loft.sh/docs/cli/loft/>.
+
+- Install or upgrade Loft in the current Kubernetes cluster:
+
+`loft start`
+
+- Authenticate to a remote Loft instance:
+
+`loft login {{https://loft.example.com}}`
+
+- Create a virtual cluster with a specific space and cluster:
+
+`loft create vcluster {{vcluster_name}} {{[-s|--space]}} {{space_name}} {{[-c|--cluster]}} {{cluster_name}}`
+
+- List all virtual clusters:
+
+`loft list vclusters`
+
+- Switch context to a specific virtual cluster:
+
+`loft use vcluster {{vcluster_name}}`
+
+- Delete a virtual cluster:
+
+`loft delete vcluster {{vcluster_name}}`
+
+- Show the current Loft username:
+
+`loft vars username`
+
+- Uninstall Loft from the cluster:
+
+`loft uninstall`