refactor logo,front page,license and description

Author: taoshengshi

LICENSE

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+Starting on December 30th, 2024, GitDataAi follows a dual-licensing model with all GitDataAI project code
+contributions under the GitDataAI Software Grant and
+Contributor License Agreement. After this date, contributions are subject to the user's choice of
+the GitDataAI Source Available License v1 (GSALv1) or the Server Side Public License v1 (SSPLv1), as
+follows:
+
+
+GitDataAI Source Available License 1.0 (GSALv1) Agreement
+========================================================
+
+Last Update: December 30, 2024
+
+Acceptance
+----------
+
+This Agreement sets forth the terms and conditions on which the Licensor
+makes available the Software. By installing, downloading, accessing,
+Using, or distributing any of the Software, You agree to all of the
+terms and conditions of this Agreement.
+
+If You are receiving the Software on behalf of Your Company, You
+represent and warrant that You have the authority to agree to this
+Agreement on behalf of such entity.
+
+The Licensor reserves the right to update this Agreement from time to
+time.
+
+The terms below have the meanings set forth below for purposes of this
+Agreement:
+
+Definitions
+-----------
+
+Agreement: this GitDataAI Source Available License 1.0 Agreement.
+
+Control: ownership, directly or indirectly, of substantially all the
+assets of an entity, or the power to direct its management and policies
+by vote, contract, or otherwise.
+
+License: the License as described in the License paragraph below.
+
+Licensor: the entity offering these terms, which includes GitDataAI Ltd. on
+behalf of itself and its subsidiaries and affiliates worldwide.
+
+Modify, Modified, or Modification: copy from or adapt all or part of the
+work in a fashion requiring copyright permission other than making an
+exact copy. The resulting work is called a Modified version of the
+earlier work.
+
+GitDataAI: the GitDataAI software as described in gitdata.ai gitdata.cn jzhub.cn jzhub.io jzhub.ai.
+
+Software: certain Software components designed to work with GitDataAI and
+provided to You under this Agreement.
+
+Trademark: the trademarks, service marks, and any other similar rights.
+
+Use: anything You do with the Software requiring one of Your Licenses.
+
+You: the recipient of the Software, the individual or entity on whose
+behalf You are agreeing to this Agreement.
+
+Your Company: any legal entity, sole proprietorship, or other kind of
+organization that You work for, plus all organizations that have control
+over, are under the control of, or are under common control with that
+organization.
+
+Your Licenses: means all the Licenses granted to You for the Software
+under this Agreement.
+
+License
+-------
+
+The Licensor grants You a non-exclusive, royalty-free, worldwide,
+non-sublicensable, non-transferable license to use, copy, distribute,
+make available, and prepare derivative works of the Software, in each
+case subject to the limitations and conditions below.
+
+Limitations
+-----------
+
+You may not make the functionality of the Software or a Modified version
+available to third parties as a service or distribute the Software or a
+Modified version in a manner that makes the functionality of the
+Software available to third parties.
+
+Making the functionality of the Software or Modified version available
+to third parties includes, without limitation, enabling third parties to
+interact with the functionality of the Software or Modified version in
+distributed form or remotely through a computer network, offering a
+product or service, the value of which entirely or primarily derives
+from the value of the Software or Modified version, or offering a
+product or service that accomplishes for users the primary purpose of
+the Software or Modified version.
+
+You may not alter, remove, or obscure any licensing, copyright, or other
+notices of the Licensor in the Software. Any use of the Licensor's
+Trademarks is subject to applicable law.
+
+Patents
+-------
+
+The Licensor grants You a License, under any patent claims the Licensor
+can License, or becomes able to License, to make, have made, use, sell,
+offer for sale, import and have imported the Software, in each case
+subject to the limitations and conditions in this License. This License
+does not cover any patent claims that You cause to be infringed by
+Modifications or additions to the Software. If You or Your Company make
+any written claim that the Software infringes or contributes to
+infringement of any patent, your patent License for the Software granted
+under this Agreement ends immediately. If Your Company makes such a
+claim, your patent License ends immediately for work on behalf of Your
+Company.
+
+Notices
+-------
+
+You must ensure that anyone who gets a copy of any part of the Software
+from You also gets a copy of the terms and conditions in this Agreement.
+
+If You modify the Software, You must include in any Modified copies of
+the Software prominent notices stating that You have Modified the
+Software.
+
+No Other Rights
+---------------
+
+The terms and conditions of this Agreement do not imply any Licenses
+other than th