Book: Add SQF page for hemtt utils sqf command(s) (#767)

book/utilities/sqf/case.md

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+# hemtt utils sqf case
+
+```admonish danger
+This command requires **manual review**. It can have lots of false positives so you are **strongly encouraged** to check each modified file to ensure it is correct.
+```
+
+<pre><code>Fix capitalization in SQF commands
+
+Usage: hemtt utils sqf [OPTIONS] &lt;path&gt;
+
+Arguments:
+  &lt;path&gt;
+          Path to the SQF file or a folder to recursively fix
+
+Options:
+    -t, --threads
+        Number of threads, defaults to # of CPUs
+
+    -h, --help
+        Print help information (use `-h` for a summary)
+</code>
+</pre>
+
+This will recursively correct all capitalization mistakes in SQF commands.
+
+## Example
+
+```sqf
+private _positionASL = GetPosasl Player;
+// becomes
+private _positionASL = getPosASL player;
+```
+
+## False Positives
+
+This command does not full parse your SQF files.
+
+It will not change words in strings in comments, but it may change words that will break your program
+
+```sqf
+// script_macros.hpp
+#define FALSE 0
+#define TRUE 1
+
+// fnc_someFunction.sqf
+if (getNumber (configFile >> "someClass" >= TRUE)) then {...};
+// becomes
+if (getNumber (configFile >> "someClass" >= true)) then {...};
+```
+
+```sqf
+private _value = player getVariable [QGVAR(showHud), false];
+// becomes
+private _value = player getVariable [QGVAR(showHUD), false];
+```