feat: add ssh config

queries/ssh_config/folds.scm

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+[
+  (host_declaration)
+  (match_declaration)
+] @fold

queries/ssh_config/highlights.scm

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+; Literals
+
+(string) @string
+
+(pattern) @string.regex
+
+(token) @character
+
+[
+  (number)
+  (bytes)
+  (time)
+] @number
+
+[
+  (kex)
+  (mac)
+  (cipher)
+  (key_sig)
+] @parameter
+
+[
+  ; generic
+  "yes" "no"
+  "ask" "auto"
+  "none" "any"
+  ; ControlMaster
+  "autoask"
+  ; FingerprintHash
+  "md5" "sha256"
+  ; PubkeyAuthentication
+  "unbound" "host-bound"
+  ; RequestTTY
+  "force"
+  ; SessionType
+  "subsystem" "default"
+  ; StrictHostKeyChecking
+  "accept-new" "off"
+  ; Tunnel
+  "point-to-point" "ethernet"
+  (ipqos)
+  (verbosity)
+  (facility)
+  (authentication)
+] @constant.builtin
+
+(uri) @text.uri
+
+; Keywords
+
+[ "Host" "Match" ] @keyword
+
+(parameter keyword: _ @keyword)
+
+(host_declaration argument: _ @namespace)
+
+(match_declaration
+  (condition criteria: _ @attribute))
+
+"all" @attribute
+
+; Misc
+
+[
+  "SSH_AUTH_SOCK"
+  (variable)
+] @constant
+
+(comment) @comment @spell
+
+(ERROR) @error
+
+; Punctuation
+
+[ "${" "}" ] @punctuation.special
+
+[ "\"" "," ":" "@" ] @punctuation.delimiter
+
+[ "=" "!" "+" "-" "^" ] @operator
+
+[ "*" "?" ] @character.special

queries/ssh_config/indents.scm

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+[
+  (host_declaration)
+  (match_declaration)
+] @indent.begin
+
+; incomplete declarations
+(ERROR . [ "Host" "Match" ]) @indent.begin

queries/ssh_config/injections.scm

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+((comment) @injection.content
+ (#set! injection.language "comment"))
+
+((condition
+   criteria: "exec"
+   argument: (string) @injection.content)
+ (#set! injection.language "bash"))
+
+((parameter
+   keyword: [
+              "KnownHostsCommand"
+              "LocalCommand"
+              "RemoteCommand"
+              "ProxyCommand"
+            ]
+   argument: (string) @injection.content)
+ (#set! injection.language "bash"))