Initial LSP implementation/vscode support

newt-vscode-lsp/syntaxes/inject.json

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+{
+  "scopeName": "newt.injection",
+  "injectionSelector": "L:text.html.markdown",
+  "patterns": [
+    {
+      "include": "#fenced_code_block_newt"
+    }
+  ],
+  "repository": {
+    "fenced_code_block_newt": {
+      "begin": "(^|\\G)(\\s*)(`{3,}|~{3,})\\s*(?i:(newt)((\\s+|:|,|\\{|\\?)[^`]*)?$)",
+      "name": "markup.fenced_code.block.markdown",
+      "end": "(^|\\G)(\\2|\\s{0,3})(\\3)\\s*$",
+      "beginCaptures": {
+        "3": {
+          "name": "punctuation.definition.markdown"
+        },
+        "4": {
+          "name": "fenced_code.block.language.markdown"
+        },
+        "5": {
+          "name": "fenced_code.block.language.attributes.markdown"
+        }
+      },
+      "endCaptures": {
+        "3": {
+          "name": "punctuation.definition.markdown"
+        }
+      },
+      "patterns": [
+        {
+          "begin": "(^|\\G)(\\s*)(.*)",
+          "while": "(^|\\G)(?!\\s*([`~]{3,})\\s*$)",
+          "contentName": "meta.embedded.block.newt",
+          "patterns": [
+            {
+              "include": "source.newt"
+            }
+          ]
+        }
+      ]
+    }
+  }
+}

newt-vscode-lsp/syntaxes/newt.tmLanguage.json

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+{
+  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
+  "name": "newt",
+  "scopeName": "source.newt",
+  "patterns": [
+    {
+      "name": "invalid.illegal.trace",
+      "match": "\\b(trace|strace|fatalError)\\b"
+    },
+    {
+      "name": "comment.block.newt",
+      "begin": "/-",
+      "end": "-/",
+      "contentName": "comment.block.newt"
+    },
+    {
+      "name": "comment.line.newt",
+      "begin": "--",
+      "end": "\\n"
+    },
+    {
+      "name": "keyword.newt",
+      "match": "\\b(λ|=>|<-|->|→|:=|\\$|data|record|constructor|where|do|class|uses|instance|case|of|let|if|then|else|forall|∀|in|U|module|import|ptype|pfunc|infix|infixl|infixr)\\b"
+    },
+    {
+      "name": "string.js",
+      "begin": "`",
+      "end": "`",
+      "patterns": [{ "include": "source.js" }]
+    },
+    {
+      "name": "character",
+      "match": "'\\\\?.'"
+    },
+    {
+      "name": "string.double.newt",
+      "begin": "\"",
+      "end": "\"",
+      "patterns": [
+        {
+          "name": "constant.character.escape.newt",
+          "match": "\\\\[^{]"
+        }
+      ]
+    }
+  ]
+}