feat: Add log record attribute limits

[kaylareopelle]

Similar to SpanLimits, add a LogRecordLimits class that handles configuration of attribute count and value length values.

Closes #1516

[mwear]

Can we update Internal.valid_attributes? to accept log record as a kind?

[kaylareopelle]

We could! I wanted to minimize the impact on the tracing SDK and other gems, so I didn't reach toward refactoring it initially. Would you prefer a refactor over this duplication?

One way to update it could be to add a new signal attribute, refactor the message to remove span, and perhaps use log_record.body for owner:

opentelemetry-ruby/sdk/lib/opentelemetry/sdk/internal.rb

Lines 51 to 63 in 98c629e

	def valid_attributes?(owner, kind, attrs)
	attrs.nil? || attrs.each do |k, v|
	if !valid_key?(k)
	OpenTelemetry.handle_error(message: "invalid #{kind} attribute key type #{k.class} on span '#{owner}'")
	return false
	elsif !valid_value?(v)
	OpenTelemetry.handle_error(message: "invalid #{kind} attribute value type #{v.class} for key '#{k}' on span '#{owner}'")
	return false
	end
	end
	true
	end