Banned some configs from workspace settings

CVE-2021-28792: Fixes vulnerability which allowed malicous workspaces to execute code when opened by providing. Now the vulnerable configs cannot be overrided in workspaces anymore:
sourcekit-lsp.serverPath, swift.languageServerPath, swift.path.sourcekite, swift.path.sourcekiteDockerMode, swift.path.swift_driver_bin, swift.path.shell. Reported by @Ry0taK.

Error Messages!

• Better and more helpful error messages on first start
• Upgraded dependencies

Running default targets

• Running default target did not work #94

Disable C and C++ for sourcekit-lsp

• Disable C and C++ for sourcekit-lsp

Restart of LSP, Stop, Clean, Run, Docs...

• Allow lang server restart #82 #85 by @clayreimann
• Commands for stop, clean and run #82 #85 by @clayreimann
• Added tables for all configurations and commands to README

Restart the great refactoring

• Allow lang server restart #82 #85 by @clayreinann
• Commands for stop, clean and run #82 #85 by @clayreimann

Correct default Toolchain Path

• Did not respect default toolchain path

Use Xcode's sourcekit-lsp

• Default to Xcode's sourcekit-lsp on macOS instead of sourcekite
• README.md instruction improvements #70 by @fxn.

iOS for sourcekit-lsp

• Support iOS for sourcekit-lsp #64 by @haifengkao

sourcekit-lsp environment

• sourcekit-lsp with different toolchains failed #63
• Drop broken debugger of SDE #22

If you are curious about how to set debugging up, see Debugging Swift in VS Code.