Add ledger tree-sitter (#572)

Might need to update later since the current one highlight does not
work very well yet.

.gitmodules

@@ -94,3 +94,7 @@
 	path = helix-syntax/languages/tree-sitter-latex
 	url = https://github.com/latex-lsp/tree-sitter-latex
 	shallow = true
+[submodule "helix-syntax/languages/tree-sitter-ledger"]
+	path = helix-syntax/languages/tree-sitter-ledger
+	url = https://github.com/cbarrete/tree-sitter-ledger
+	shallow = true

helix-syntax/languages/tree-sitter-ledger

@@ -0,0 +1 @@
+Subproject commit 72319504776f14193472a6ad14abec0af0225cbe

languages.toml

@@ -205,6 +205,15 @@ file-types = ["java"]
 roots = []
 indent = { tab-width = 4, unit = "    " }
 
+[[language]]
+name = "ledger"
+scope = "source.ledger"
+injection-regex = "ledger"
+file-types = ["ldg", "ledger", "journal"]
+roots = []
+comment-token = ";"
+indent = { tab-width = 4, unit = "    " }
+
 # [[language]]
 # name = "haskell"
 # scope = "source.haskell"

runtime/queries/ledger/highlights.scm

@@ -0,0 +1,38 @@
+[
+    (comment)
+    (note)
+] @comment
+
+[
+    (date)
+    (interval)
+    (quantity)
+] @number
+
+((account) @field)
+((commodity) @text.literal)
+
+"include" @include
+
+[
+    "account"
+    "alias"
+    "assert"
+    "check"
+    "commodity"
+    "def"
+    "default"
+    "end"
+    "eval"
+    "format"
+    "nomarket"
+    "note"
+    "payee"
+    "check"
+    "A"
+    "Y"
+    "N"
+    "D"
+    "C"
+    "P"
+] @keyword

runtime/queries/ledger/injections.scm

@@ -0,0 +1 @@
+(comment) @comment