docs: add LICENSE, CITATION.cff, polish README, fix meta tags

- MIT LICENSE added (where missing)
- CITATION.cff with full author metadata (Chandan Sheikder, BIT)
- CITATION.cff includes ORCID, DOI, keywords, and repository URL
- README.md polished with badges, project structure, usage, and citation section
- GitHub Pages: fixed OG/Twitter meta tags (removed 'Front-End Developer')
- Author: Chandan Sheikder <chandan@bit.edu.cn>

Author: Chandan118

CITATION.cff

@@ -0,0 +1,27 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it using the metadata below."
+type: software
+title: "Bio-Inspired Navigation Data Generation"
+version: "1.0.0"
+date-released: "2025-03-23"
+doi: "10.5281/zenodo.19097072"
+abstract: >-
+  A production-ready Python package for generating, visualizing, and analyzing bio-inspired navigation research data, with optional ROS 2 integration.
+license: MIT
+authors:
+  - family-names: Sheikder
+    given-names: Chandan
+    email: chandan@bit.edu.cn
+    affiliation: "Beijing Institute of Technology (BIT)"
+    orcid: "https://orcid.org/0000-0003-1459-8747"
+repository-code: "https://github.com/Chandan118/Bio-Inspired-Navigation"
+keywords:
+  - "bio-inspired navigation"
+  - "swarm robotics"
+  - "autonomous navigation"
+  - "ROS 2"
+  - "sensor fusion"
+contact:
+  - name: Chandan Sheikder
+    email: chandan@bit.edu.cn
+    website: "https://chandan118.github.io"

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Chandan Sheikder
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.