impr: add words to Odin, remove non-existing complex_* (@dayllenger) (#6607)

### Description

Added a few missing keywords, some common attributes and procedures.
Removed complex_double/complex_float (not sure why they were there).

### Checks

- [x] Check if any open issues are related to this PR; if so, be sure to
tag them below.
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frontend/static/languages/code_odin.json

@@ -2,7 +2,12 @@
   "name": "code_odin",
   "noLazyMode": true,
   "words": [
+    "abs",
+    "align_of",
+    "allocator",
     "any",
+    "append",
+    "assert",
     "auto_cast",
     "b16",
     "b32",
@@ -15,14 +20,15 @@
     "byte",
     "case",
     "cast",
+    "clamp",
     "complex128",
     "complex32",
     "complex64",
-    "complex_double",
-    "complex_float",
+    "context",
     "continue",
     "cstring",
     "defer",
+    "delete_key",
     "distinct",
     "do",
     "double",
@@ -41,7 +47,9 @@
     "false",
     "float",
     "for",
+    "force_inline",
     "foreign",
+    "free_all",
     "i128",
     "i128be",
     "i128le",
@@ -61,23 +69,48 @@
     "int",
     "map",
     "matrix",
+    "max",
+    "min",
+    "new_clone",
     "nil",
+    "no_nil",
     "not_in",
+    "offset_of",
+    "or_break",
+    "or_continue",
     "or_else",
     "or_return",
     "package",
+    "packed",
+    "panic",
+    "partial",
+    "println",
+    "private",
     "proc",
     "quaternion128",
     "quaternion256",
     "quaternion64",
+    "raw_data",
+    "raw_union",
     "rawptr",
+    "reserve",
+    "resize",
     "return",
     "rune",
+    "shared_nil",
+    "shrink",
+    "simd",
+    "size_of",
+    "soa_unzip",
+    "soa_zip",
     "string",
     "struct",
     "switch",
+    "thread_local",
+    "tprintf",
     "transmute",
     "true",
+    "type_of",
     "typeid",
     "u128",
     "u128be",