[TypeSpec Validation] Rename folder from "TypeSpecValidation" to "typespec-validation" (#26548)

- Aligns with naming convention for JS packages in other repos like microsoft/typespec
- Also fixes incorrect "main" filed in package.json
- Fixes #26392

Author: mikeharder

.gitignore

@@ -121,5 +121,5 @@ warnings.txt
 *.bak
 
 # Eng Tools
-eng/tools/TypeSpecValidation/dist
-!eng/tools/TypeSpecValidation/cmd/*.js
+eng/tools/typespec-validation/dist
+!eng/tools/typespec-validation/cmd/*.js

eng/tools/package.json

@@ -1,7 +1,7 @@
 {
   "name": "azure-rest-api-specs-eng-tools",
   "devDependencies": {
-    "@azure-tools/typespec-validation": "file:TypeSpecValidation"
+    "@azure-tools/typespec-validation": "file:typespec-validation"
   },
   "private": true
 }

…g/tools/TypeSpecValidation/.mocharc.yaml …/tools/typespec-validation/.mocharc.yamleng/tools/TypeSpecValidation/.mocharc.yaml renamed to eng/tools/typespec-validation/.mocharc.yaml eng/tools/TypeSpecValidation/.mocharc.yaml renamed to eng/tools/typespec-validation/.mocharc.yaml

@@ -3,7 +3,7 @@
     "private": true,
     "version": "0.0.1",
     "type": "module",
-    "main": "dist/TypeSpecValidation.js",
+    "main": "dist/src/index.js",
     "bin": {
         "tsv": "cmd/tsv.js"
     },