chore(#2787): minimum nvim version 0.9, replace 0.10 deprecated, enable deprecated warnings (#2788)

* refactor(#2787): replace deprecated

* refactor(#2787): enable deprecated checks

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): use inline deprecation disabling

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): replace deprecated

* refactor(#2787): deprecated are now warnings

* refactor(#2787): 0.9 is the minimum supported version

* Revert "refactor(#2787): replace deprecated"

This reverts commit b6b4c32fcb.

* refactor(#2787): suppress deprecated until 0.11

* refactor(#2787): minimum nvim version 0.8 -> 0.9

* refactor(#2787): reset globals

* refactor(#2787): explicitly check for vim.diagnostic.is_enabled function presence

.luarc.json

@@ -9,9 +9,7 @@
   },
   "diagnostics": {
     "libraryFiles": "Disable",
-    "severity": {
-      "deprecated": "Hint"
-    },
+    "globals": [],
     "neededFileStatus": {
       "ambiguity-1": "Any",
       "assign-type-mismatch": "Any",
@@ -23,7 +21,7 @@
       "code-after-break": "Any",
       "codestyle-check": "None",
       "count-down-loop": "Any",
-      "deprecated": "None",
+      "deprecated": "Any",
       "different-requires": "Any",
       "discard-returns": "Any",
       "doc-field-no-class": "Any",