GLPI 10.0 compatibility

- Permit installation on GLPI 10.0.x
- Limit compatibility to GLPI 10.x
- Use Guzzle library provided by GLPI
- Use same PHP minimal version as GLPI core; upgrade build libs
- Replace DATETIME field by TIMESTAMP
- Remove deprecated usage of integer display width
- Remove deprecated usage of integer display width
- Force database dynamic row format
- Use default sign on primary/foreign keys
- Drop useless check

composer.json

@@ -1,15 +1,17 @@
 {
     "require": {
-        "php": "^7.2",
-        "guzzlehttp/guzzle": "^6.2"
+        "php": ">=7.4"
     },
     "require-dev": {
-        "glpi-project/tools": "^0.4"
+        "glpi-project/tools": "^0.7"
+    },
+    "provide": {
+        "guzzlehttp/guzzle": "*"
     },
     "config": {
         "optimize-autoloader": true,
         "platform": {
-            "php": "7.2.0"
+            "php": "7.4.0"
         },
         "sort-packages": true
     }