[libxcrypt] Add build requirements (#38376)

Fix #38372

Add message of build requirements `autoconf` `automake` `libtool`
`pkg-config` from [upstream
README](https://github.com/besser82/libxcrypt?tab=readme-ov-file#build-requirements-and-instructions)

### Checklist
- [x] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [ ] ~SHA512s are updated for each updated download.~
- [ ] ~The "supports" clause reflects platforms that may be fixed by
this new version.~
- [ ] ~Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.~
- [ ] ~Any patches that are no longer applied are deleted from the
port's directory.~
- [x] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [x] Only one version is added to each modified port's versions file.

### Test
Port install tests pass with following triplets:
* x64-linux

ports/libxcrypt/portfile.cmake

@@ -1,5 +1,20 @@
 set(VCPKG_POLICY_ALLOW_RESTRICTED_HEADERS enabled)
 
+# Requirements from https://github.com/besser82/libxcrypt?tab=readme-ov-file#build-requirements-and-instructions
+message(
+"${PORT} currently requires the following libraries from the system package manager:
+    autoconf automake libtool pkg-config
+These can be installed on Debian systems via sudo apt install autoconf automake libtool pkg-config"
+)
+find_program(AUTORECONF_BIN autoreconf)
+if(NOT AUTORECONF_BIN)
+    message(FATAL_ERROR "${PORT} requires autoconf from the system package manager (example: \"sudo apt install autoconf\")")
+endif()
+find_program(LIBTOOL_BIN libtoolize)
+if(NOT LIBTOOL_BIN)
+    message(FATAL_ERROR "${PORT} requires libtool from the system package manager (example: \"sudo apt install libtool\")")
+endif()
+
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO besser82/libxcrypt

ports/libxcrypt/vcpkg.json

@@ -1,6 +1,7 @@
 {
   "name": "libxcrypt",
   "version": "4.4.36",
+  "port-version": 1,
   "description": "libxcrypt is a modern library for one-way hashing of passwords. On Linux-based systems, by default libxcrypt will be binary backward compatible with the libcrypt.so.1 shipped as part of the GNU C Library.",
   "homepage": "https://github.com/besser82/libxcrypt",
   "license": "LGPL-2.1-only",

versions/baseline.json

@@ -5186,7 +5186,7 @@
     },
     "libxcrypt": {
       "baseline": "4.4.36",
-      "port-version": 0
+      "port-version": 1
     },
     "libxcvt": {
       "baseline": "0.1.2",

versions/l-/libxcrypt.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "89d7de97e87cb0eb10479d47ec43e1cc732b2734",
+      "version": "4.4.36",
+      "port-version": 1
+    },
     {
       "git-tree": "85a0274aca1b0c7bf756cb41f77d9dbfc2b6fb78",
       "version": "4.4.36",