Navigate Pascal Ligo projects by naive searches using git grep

Implements "Go to definition" for Pascal Ligo dialect of Tezos smart contract language

• Makes strong assumptions on your project code formatting
• Requires workspace folder to be checked into git
• Loads and navigates in few milliseconds as opposed to fully-fledged Language servers
• Doesn't build AST, often misses and yields false positives
• Might require pascaligo-vscode package to identify ligo language