Sanitize suggested name when opening "Create Component" from context menu

[datho7561]

Speaking of component name, could we try to sanitize the initial component name for git repo imports :

vscode-openshift-tools/src/webview/create-component/pages/fromExistingGitRepo.tsx

Line 415 in 843dca5

initialComponentName={gitURL.url.substring(gitURL.url.lastIndexOf('/') + 1)}

so that they respect

vscode-openshift-tools/src/webview/common-ext/createComponentHelpers.ts

Lines 95 to 99 in 843dca5

	validationMessage = OpenShiftItem.validateMatches(
	`Not a valid component name.
	Please use lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character`,
	name,
	);

. Can be included in a separate PR.

(eg. https://github.com/openshift-evangelists/Wild-West-Frontend fails validation )

Originally posted by @rgrunber in #3127 (comment)