Add support for Bicep language

[SebastianClaesson]

Bicep

Visual Studio Code extension: https://github.com/Azure/bicep/tree/main/src/vscode-bicep

Bicep is used within the Azure Cloud as the go-to language for Infrastructure-as-code.

Data types in Bicep: https://learn.microsoft.com/en-us/azure/azure-resource-manager/bicep/data-types

Implemented in Chroma: https://github.com/alecthomas/chroma https://github.com/alecthomas/chroma/blob/master/lexers/embedded/bicep.xml